The Syrians penetrated an area held by the State of Israel, but they did not cross the Israeli border. Nor did Palestinians from the Gaza Strip attempt to cross the Israeli border in the south
"On Sunday, May 15, which the Arabs call Nakba Day, the media reported that Syrian civilians had crossed over the Israeli border on the Golan Heights. The prime minister even issued a dramatic announcement of the fact and promising that Israel will protect its borders. The incident raises the question of whether Israel has a border with Syria on the Golan Heights. The answer seems obvious, but in fact it is not. An international border is one reached by agreement between the two political entities on either side. Sometimes the line is the result of direct negotiations, but not always..."