On the eve of the 1967 Six-Day-War, Israel was standing alone.
The events of June 1967 came in the aftermath of the 1956 Sinai Campaign which was waged by Israel along with France and Great Britain to protect international passage of the Suez Canal which was prevented by Egyptian President Gamal Abdel Nasser.
On December 31, 1956, when Israeli troops were forced by international pressure to withdraw from the Sinai, following Israel's victory over Egypt, then Israeli foreign minister Golda Meir stated before the UN that Israel’s withdrawal was based upon US President Eisenhower’s declaration that “we should not assume that if Israel withdraws, Egypt will prevent Israeli shipping from using the Suez Canal or the Gulf of Aqaba.”
Eleven years later on May 16, 1967, Egypt did just that. Nasser demanded that UN peacekeeping forces evacuate
Arab leaders were clamoring for the destruction of Israel. 
the Sinai. On May 22, Nasser blockaded the Straits of Tiran to Israeli ships.
In one fell swoop, the international guarantees granted to Israel after its’ 1956 withdrawal were null. A hostile Egypt was primed for war, and had troops positioned in the Sinai.
President Johnson opposed Egypt’s move stating that the United States considers the Gulf of Aqaba to be “an international waterway.” However, vocal opposition within the international community opposition was limited, and the passage of Israeli ships bound for the port city of Eilat was barred.
On May 18, 1967, in a rare moment for the UN, Secretary General U. Thant described Syrian terror attacks across Israel borders as “contrary to the spirit and letter of the United Nations.” The UN leader had made a statement without also finding criticism of Israel ; a fleeting pause from years of blind equivocation.
Arab Plans
Arab leaders were clamoring for the destruction of Israel.
King Feisal of Saudi Arabia stated, “The first priority of the Arabs is the extermination of Israel.” Hafez El Assad of Syria on May 20 stated that the time has come to “enter into a battle of annihilation.”
On May 26, Nasser stated that Egypt was ready for all out war and that its’ main goal is “The destruction of Israel.” He spoke of “inflicting punishment that will go beyond the imagination of the aggressor.” Radio Cairo exhorted its listeners, “Massacre all the men all the women, all the children of Israel.”
PLO leader, Ahmed Shukairy, upon arrival in Amman Jordan, June 1, stated that he estimated that among the Jews in the aftermath of the war, “none will survive.”
No Help
Around the world, France suspended arms shipments to Israel and a number of Arab nations. Great Britain announced its’ neutrality. The United States had reiterated its commitment to support the territorial integrity of all nations in the Middle East.
The US appealed to Israel for calm, urging Israel to avoid “hasty action,” To Israel, war was inevitable. Waiting would only work to the advantage of Nasser.
On May 25, 1967 , Secretary General Thant conducted a “very cordial” meeting with the Egyptian dictator, yet the Security Council had failed to resolve the issue.
How would Israel respond? The Arab armies were far larger and better supplied. They were amassing and primed for battle. The Jews were assessing the risks and dangers. Israeli burial societies were choosing open areas to bury the expected victims of the impending war.
The situation continued to escalate.
On May 28, PLO terrorists and Arab irregular troops fired mortars and machine guns from Gaza upon Israeli farmers and soldiers.
The day the fighting began, Israeli civilians were again in the line of fire. Jordanian guns from Kalkilya began firing mortar shells upon Tel Aviv. There were no casualties. However, there was severe damage in Jerusalem as heavy fire also reigned down upon the residents there. In the first day of shelling, ten Israelis were killed and one hundred were wounded. By the time the Old City of Jerusalem was liberated two days later, there were five hundred Israeli civilian casualties. One thousand buildings were damaged.
The world did not protest. The UN did not demand an investigatory commission.
Six Days Later
The UN Security Council unanimously voted for a ceasefire. Only then, after Israel’s overwhelming victory, the UN intervened. Defense Minister Moshe Dayan noted that, “The United nations had kept peace in the Middle east only as long as President Nasser did not want to start war again.”
The first town captured in Judea and Samaria, Jenin, was nearly empty as its inhabitants had fled in fear. Soon after, realizing that they were not in danger, they began to stream back. When Israeli forces entered Bethlehem, they were met with hundreds of white flags. In Hebron, Jews almost immediately visited the Cave of the Patriarchs and the Arabs who had prohibited Jewish entry for centuries, did not dare object.
The Arabs had initially feared that the Jews as victors would exact revenge for the hostilities which they had initiated over the years. However, Israel’s armed forces displayed civility. Eventually, over time, these populations would become emboldened and would eventually again rise up against the Jewish State.
On June 27, Israel annexed all parts of Jerusalem. Just one day later, on June 28, the UN General Assembly responded demanding an Israeli withdrawal from liberated territories. A chorus of attacks also heaped upon the Jewish State for its annexation of the Old City of Jerusalem.
Where were they in the days leading up to the war?
Israelis react .
Prime Minister Levi Eshkol rejected the international pressure telling the Knesset that Israel alone fought for its 
Eshkol: 'Faithful to itself and looking confidently towards the future, with the aid of the Rock and Redeemer of Israel, this nation shall yet dwell in safety.'
right to exist and “alone we are entitled to determine our true and vital interests and how we will be secured.”
Israeli Ambassador to Great Britain, Aharon Remez, at a Zionist conference in London just following the war, echoed those sentiments, asking, “Who has the right to tell Israel to revert to the position of the greatest danger while her enemies are already proclaiming their determination for a new round?”
The world response was swift, and vocal, but the Jews and Israel’s friends worldwide were relieved. Israel had not only survived, but emerged victorious.
Eighteen years of Jordanian abuse of Jerusalem was over. Its’ Jewish institutions desecrated and destroyed during the nineteen years of Jordanian occupation of Jordan could now be rebuilt. Jews could once again return to their most sacred sites. Religious institutions of all faiths were now respected.
Israel’s tactical situation dramatically improved. Tel Aviv, Jerusalem, was no longer in range of Jordanian guns. The Northern parts of Israel, the Tiberius, the Chula valley regions would no longer be shelled by Syria. The IDF could have better control on hostilities from Gaza. There was now more space, a buffer, between Israel and her enemies in Egypt, Syria, and Jordan . The waters of the Jordan River could no longer be diverted from its sources in the Golan Heights as was done by Syria prior to the war.
As Israeli generals were praising the strength of their armed forces, Eshkol made reference acknowledging the Jewish State’s true source of strength, “Faithful to itself and looking confidently towards the future, with the aid of the Rock and Redeemer of Israel, this nation shall yet dwell in safety.”
.