Both sides accused each other of violating the agreement; Hezbollah fired on Israel for the first time since the truce took effect, and Israel responded with airstrikes.
The centre-left Social Democrats won the largest number of votes in the parliamentary elections, but a strong nationalist demonstration could make it difficult to form a stable, Western-oriented government.
The agency has long enjoyed broad bipartisan support. But Republican criticism has intensified, and new picks for top health care jobs hope to turn the organization around.
Forces opposed to President Bashar al-Assad have captured Aleppo's airport and are attacking the western city of Hama, according to local officials and a British-based war monitor.