The US Air Force has begun modifying a Boeing 747 that was donated to the US by Qatar over the summer, an Air Force spokesperson said on Monday.

As Trump urges Israel to be "very careful" after a strike in U.S.-allied Qatar, Netanyahu calls Rubio's visit "a clear message that America stands with Israel."

Qatar is hosting leaders of Arab and Islamic nations in the hopes of presenting a united response to Israel’s attack on Hamas leaders in Doha last week.

The 747 jetliner needs extensive security modifications. Some members of Congress worry that President Trump will pressure the Air Force to do the work too quickly.

Ivanhoe Mines is in constant dialogue with sovereign wealth funds for potential investments aimed at supporting the company's push to boost production of copper and other critical minerals, Co-Chairman Robert Friedland told Reuters on Wednesday.

Arab and Islamic leaders expressed solidarity with Qatar on Monday, strongly condemning Israel for its attack last week on the oil-rich Gulf state.

Qatar's prime minister has denounced Israel as Arab and Muslim foreign ministers are meeting to discuss a unified response to Israel's attack on Doha.

Secretary of State Marco Rubio will visit Qatar in a show of support after an Israeli missile strike last week, a senior State Department official said.