The Arab League and the anti-Israel left wing activists in the US, Europe and Israel commonly claim that any Jewish building outside of the 1949 Armistice lines is illegal and contravenes international law. They fail to point out what provision of which international law is violated, but they point out that most of the members [...]

Preamble
The Parties to the present Agreement,
Responding to the Security Council resolution of 16 November 1948,2 calling upon them, as a further provisional measure under Article 40 of the Charter of the United Nations and in order to facilitate the transition from the present truce to permanent peace in Palestine, to negotiate an armistice;
Having decided to [...]

In April 1949, talks started at Gesher B’not Yaacov, on the River Jordan. The major problem was areas occupied by the Syrian forces during the War of Independence. Israel demanded that Syria evacuate them. Syria in the end concurred, provided that certain areas were demilitarised. Israel accepted this and, on 20 July, the agreement was [...]

Egyptian-Israeli General Armistice Agreement, February 24, 1949
Preamble
The Parties to the present Agreement, responding to the Security Council resolution of 16 November 1948 calling upon them, as a further provisional measure under Article 40 of the Charter of the United Nations and in order to facilitate the transition from the present truce to permanent peace in [...]

Lebanese-Israeli General Armistice Agreement, March 23, 1949
Preamble
The Parties to the present Agreement,
Responding to the Security Council resolution of 16 November 1948,(2) calling upon them, as a further provisional measure under Article 40 of the Charter of the United Nations and in order to facilitate the transition from the present truce to permanent peace in Palestine, [...]