Israel said it launched airstrikes and artillery fire at targets in southern Gaza on Sunday, trading blame with Hamas and dimming hopes that a ceasefire brokered by U.S. President Donald Trump can lead to a lasting peace.

“Earlier today, terrorists fired an anti-tank missile and gunfire toward IDF troops operating to dismantle terrorist infrastructure in the Rafah area, in southern Gaza, in accordance with the ceasefire agreement,” the Israel Defense Forces said. “In response, the IDF has begun striking in the area to eliminate the threat and dismantle tunnel shafts and military structures used for terrorist activity,” it said.

According to media reports, Hamas said it was “unaware” of any clashes in Rafah and that it “remains committed to the ceasefire agreement.” It also accused Israel of “violating the deal and fabricating pretexts to justify its crimes.”

The Israeli far right in Prime Minister Benjamin Netanyahu’s government coalition is using the moment to call for a full resumption of the war.

National Security Minister Itamar Ben-Gvir called on Israel to renew its military operations in the Gaza Strip “in full force” following the IDF reports, writes Israeli newspaper Haaretz.

The far-right minister said Saturday that he had given Netanyahu a deadline to dismantle Hamas and enact the death penalty for terrorists, threatening that if his conditions were not met, his far-right Otzma Yehudit party would quit the government, writes another Israeli daily, the Times of Israel.

Also on Saturday, the U.S. State Department said in a statement that it has “credible reports” that Hamas could violate the ceasefire with an attack on Palestinian civilians in Gaza. If the attack takes place, it “would constitute a direct and grave violation” of the agreement forged by Trump to end the two-year war between Israel and Hamas, the statement said.

According to Bloomberg, an Israeli official said there are tentative plans for U.S. Vice President JD Vance to accompany White House mediator Steve Witkoff to the Middle East in the coming week, a signal of American seriousness about shoring up the deal. The U.S embassy in Jerusalem had no immediate comment, it said.