The first plane carrying American ammunition for Israel’s offensive on Gaza has landed in the country, as hundreds of thousands of Israeli troops mass for a possible ground assault on the besieged enclave, writes Al Jazeera.

Wednesday’s announcement comes after the United States said it would send new supplies of air defences, munitions and other security assistance to its ally to battle Hamas.

Aside from the ammunition, the US is also believed to be providing more interceptors to Israel to replenish its Iron Dome. In recent days, a barrage of rockets from Gaza has hit several targets in Israel, evading its much-vaunted aerial defence system.

Just hours before the latest announcement of military assistance, US President Joe Biden President reiterated his support for Israel, describing Hamas’s attack on Saturday as “an act of sheer evil”. Biden also warned those who might seek to take advantage of the situation to stay away, saying US forces had “enhanced our military force posture in the region to strengthen our deterrence”.

Washington’s show of support comes as Israeli Defence Minister Yoav Gallant has pledged to escalate the war against Hamas with a ground offensive: “We started the offensive from the air, later on, we will also come from the ground. We’ve been controlling the area since day two and we are on the offensive. It will only intensify. Hamas wanted a change and it will get one. What was in Gaza will no longer be”.

Jonathan Conricus, a spokesman for the Israeli military, also said in a social media post that hundreds of thousands of troops were massing near the Gaza Strip for the war with Hamas: “What we are doing in these areas close to the Gaza Strip, is that we have deployed… our infantry, armoured soldiers, our artillery corps and many other soldiers from the reserves – 300,000 in numbers – in different brigades and divisions and they are now close to the Gaza Strip, getting ready to execute the mission … that we have been given by the Israeli government”.