Yahya al-Sinwar, head of the Palestinian terrorist group Hamas in the Gaza Strip, attends a meeting with people at a hall on the seashore in Gaza City. Photo: Yousef Masoud / SOPA Images/Sipa via Reuters Connect

A senior US official said that Hamas leader Yahya Sinwar is the Palestinian terrorist group’s ultimate decision maker and has little interest in reaching a ceasefire deal with Israel, in testimony before a US Senate subcommittee hearing on Tuesday.

“At the end of the day, there’s one guy 10 stories below the ground: a psychopath, messianic in his own belief that he has established himself in history, and [he believes that] there’s a sunk cost of having lost thousands of fighters and carnage in Gaza,” said Barbara Leaf, the US assistant secretary of state for near eastern affairs.

Sinwar, the top Hamas official in Gaza and the mastermind behind the terrorist group’s Oct. 7 massacre across southern Israel, has reportedly been hiding in Hamas’ extensive network of underground tunnels during Israel’s ongoing military campaign in the coastal enclave.

Leaf’s comments echo others made by Biden administration officials.

In April, a US official told reporters that Sinwar is single-handedly holding up any progress on a potential hostage deal.

The senior Biden administration official said that while Hamas’ political bureau has shown some willingness to compromise on the terrorist group’s most hardline positions, Sinwar’s maximalist demands continuously win out.

“Sinwar has made the decision he’d rather hold [the hostages seized by Hamas terrorists on Oct. 7] than secure a ceasefire, and that’s just the truth of the situation,” the official said.

Leaf, in her testimony on Tuesday, said that Qatar — where many top Hamas political officials are based — has been “squeezing” the group — though to little effect, according to a report from Axios.

“There’s a cadre of political officials of Hamas in Doha, and boy do they squeeze them, I can assure you they squeeze them,” Leaf said.

Israel has described Hamas’ response to the new US ceasefire proposal as total rejection. But efforts to secure an agreement are still continuing, according to mediators in Qatar and Egypt, backed by the United States.

The Axios report added that Qatari Prime Minister Mohammed Bin Abdul Rahman al-Thani met on Tuesday in Doha — Qatar’s capital — with senior Hamas officials in an attempt to reach a breakthrough in the talks about the hostage and ceasefire deal.

Egypt and Qatar — which along with the United States have been mediating between Hamas and Israel — said on June 11 that they had received a response from the Palestinian groups to the US plan, without giving further details.