Qatari negotiators have departed Tehran following discussions on the Middle East war, a diplomat told AFP on Thursday, as the US and Iran traded strikes once more.

"The Qatari delegation departed from Tehran this morning following talks with Iranian officials... that lasted into the early hours of this morning," the diplomat said on condition of anonymity, adding the discussions were "conducted in coordination with the United States".

Amnesty International accused Israel on Wednesday of carrying out a campaign of "ethnic cleansing" of Palestinians from the occupied West Bank with the intention to annex the Palestinian territory.

The accusation came in a new, 149-page report alleging that the forced displacement of West Bank Palestinians resulted from a concerted state policy, and not just the actions of violent settlers. While much of the displacement is driven by settlers who build outposts on Palestinian land, the report asserts that the process could not occur without the support of the government.

The United States launched a second round of airstrikes on Iran into Thursday morning after U.S. President Donald Trump warned that Tehran would "pay the price" for stalled negotiations, and Iran responded with strikes targeting Bahrain, Kuwait and Jordan.

The new U.S. assault came as efforts to negotiate an end the war again appeared stuck, with Iran insisting it would maintain its chokehold on the Strait of Hormuz, which has disrupted global energy supplies and sent oil prices higher. The American attack appeared more intense and wider than the day before, but Iran released little information on the extent of the damage.

U.S. President Donald Trump said Wednesday that Iran is taking "too long to negotiate a deal" and that "now they will have to pay the price."

Trump made the comment on his Truth Social platform.

Turkish President Recep Tayyip Erdogan warned Wednesday that Israel's attacks on Syria and Lebanon have started to represent a threat to Turkey.

Israeli Prime Minister Benjamin Netanyahu will seek re-election in the country's upcoming national vote, expected to be held by late October, the 76-year-old leader's Likud party announced Wednesday.

"Prime Minister Netanyahu will run in the next elections and, God Willing, he will win," the party said on Telegram.

Iran attacked U.S. bases in Jordan and Bahrain on Wednesday, the latest salvo in tit-for-tat strikes with the United States after the downing of a U.S. helicopter over the Strait of Hormuz.

The worst bout of fighting between Washington and Tehran since their April 8 ceasefire has cast further doubt on U.S. President Donald Trump's earlier claim that negotiations were in their "final throes" before reaching an enduring settlement to end the Middle East war.

Members of Palestinian factions including Hamas agreed in principle for Gaza's armed groups to hand over parts of their arsenals to a yet-to-be-created, ad hoc Palestinian entity during talks in Cairo, Palestinian sources told AFP on Tuesday.

U.S. President Donald Trump on Tuesday said negotiations over a peace deal to end the Middle East war were in their final stages, after Iran and Israel halted attacks that threatened to reignite the months-long conflict.

U.S. President Donald Trump said Tuesday that a U.S. military helicopter was shot down by Iran and that the United States "must" respond.

The Apache helicopter is the second crewed aircraft that Washington has confirmed was shot down by Iran during the Middle East war, following the loss of an F-15 fighter plane in April.