It seems the US is engaged in overt and secret (back channel) string-pulling in an attempt to delay Israel’s invasion of Gaza.
Benefitting Israel are the 2 US carrier groups in the Mediterranean (with aircraft, anti-missile missiles, and 2,000embarked Marines). These carrier groups are serving as a warning to forces in Iran (eg. Iran’s strategic Missile forces) and in Syria and Lebanon, not to attack Israel.
Low-key US Special Forces and others in Syria are disrupting the supply of arms from Iran travelling to Hezbollah in Lebanon. Arms, including missiles, that might be used against Israel. US forces in Syria may be armed with Patriot missiles "for their own protection" not to mention handy against large Iranian and Syrian missiles.
The US is engineering the Gaza to Israel hostage releases in return for the US delaying the Israeli invasion and effectively paying for the truck convoys entering Gaza from Egypt.
Also the US has asked Israel to return to the established practice of warning Gaza building owners to evacuate 10 minutes before the buildings are bombed by Israeli aircraft. In return Hamas has promised not to kill hostages.