DUBAI, United Arab Emirates — President Donald Trump’s proposal that the United States “take over” the Gaza Strip and permanently resettle its Palestinian residents was swiftly rejected and denounced on Wednesday by American allies and adversaries alike.

Trump’s suggestion came at a White House news conference with Israeli Prime Minister Benjamin Netanyahu, who smiled several times as the president detailed a plan to build new settlements for Palestinians outside the Gaza Strip, and for the U.S. to take “ownership” in redeveloping the war-torn territory into “the Riviera of the Middle East.”

The comments came amid a fragile ceasefire between Israel and Hamas, during which the militant group has been turning over hostages in exchange for the release of prisoners held by Israel.

Egypt, Jordan and other American allies in the Middle East have already rejected the idea of relocating more than 2 million Palestinians from Gaza elsewhere in the region. Following Trump’s remarks, Egypt’s Foreign Ministry issued a statement stressing the need for rebuilding “without moving the Palestinians out of the Gaza Strip.”

Saudi Arabia, an important American ally, weighed in quickly on Trump’s expanded idea to take over the Gaza Strip in a sharply worded statement, noting that its long call for an independent Palestinian state was a “firm, steadfast and unwavering position.”

“The kingdom of Saudi Arabia also stresses what it had previously announced regarding its absolute rejection of infringement on the legitimate rights of the Palestinian people, whether through Israeli settlement policies, annexation of Palestinian lands or efforts to displace the Palestinian people from their land,” the statement said.

The leaders of Australia and Ireland, foreign ministries from China, New Zealand and Germany, and a Kremlin spokesman all reiterated support for a two-state solution.

“Australia’s position is the same as it was this morning, as it was last year, as it was 10 years ago,” Australian Prime Minister Anthony Albanese said.

Trump has already made waves — and upset longtime allies — suggesting the purchase of Greenland, the annexation of Canada and the possible takeover of the Panama Canal. It was not immediately clear whether the idea of taking over the Gaza Strip was a well thought out plan, or an opening gambit in negotiations.

“The comments last night were, of course, very concerning,” said Irish Prime Minister Micheál Martin. “I always adopt the approach when it comes to the U.S. administration of: judge them based on what they do and not what they say.”

Turkish Foreign Minister Hakan Fidan told state-run Anadolu Agency that Trump’s proposal on “deportations from Gaza is not something that either the region or we would accept.”

“Even thinking about it, in my opinion, is wrong and absurd,” Fidan said.

Palestinian President Mahmoud Abbas called for the United Nations to “protect the Palestinian people and their inalienable rights,” saying that what Trump wanted to do would be “a serious violation of international law.”

Representatives of Palestinian refugee groups in Mar Elias refugee camp in Beirut rejected the proposal and said it was doomed to fail. Lebanon hosts about 200,000 refugees, many of whom live in camps set up after 1948, when their parents or grandparents fled their homes in land that became Israel.

Fathi Kallab, a member of the leftist political faction Democratic Front for the Liberation of Palestine, said the plan would violate international law.

“Displacement of residents under humanitarian pretexts is considered a war crime punishable by law, as recognized by multiple international organizations,” he said.

British Prime Minister Keir Starmer referred to images of “thousands of Palestinians walking through the rubble” to get back to what remains of their homes.

“They must be allowed home,” Starmer said. “They must be allowed to rebuild, and we should be with them in that rebuild, on the way to a two-state solution.”

Hamas, which sparked the war with its Oct. 7, 2023, attack on Israel, said Trump’s proposal was a “recipe for creating chaos and tension in the region.”

“Instead of holding the Zionist occupation accountable for the crime of genocide and displacement, it is being rewarded, not punished,” the militant group said in a statement.

In the U.S., opposition politicians rejected Trump’s idea, with Sen. Chris Coons, D-Conn., calling his idea “offensive and insane and dangerous and foolish.”

The idea “risks the rest of the world thinking that we are an unbalanced and unreliable partner because our president makes insane proposals,” Coons said, noting the irony of the proposal coming shortly after Trump moved to dismantle the U.S. Agency for International Development.

“Why on earth would we abandon decades of well-established humanitarian programs around the world, and now launch into one of the world’s greatest humanitarian challenges?” Coons said.

Democratic Rep. Rashida Tlaib, a Palestinian American member of Congress from Michigan, accused Trump in a social media post of “openly calling for ethnic cleansing” with the idea of resettling Gaza’s entire population.