The U.S. has now collected 510 reports of unidentified flying objects, many of which are flying in sensitive military airspace. That's according to a declassified intelligence report summary released Thursday. While there's no evidence of extraterrestrials, they still pose a threat. The Office of the Director of National Intelligence says that's because the events continue to occur in restricted or sensitive airspace, highlighting possible concerns for flight safety or spying. The classified version of the report addresses how many of those objects were found near locations where nuclear power plants operate or nuclear weapons are stored.

The U.S. and Japan are ready to seal an agreement to bolster their cooperation on space. It's the latest in a series of moves by Japan as it looks to build security cooperation with allies in a time of provocative Chinese and North Korean military action. President Joe Biden and Japanese Prime Minister Fumio Kishida held wide-ranging talks at the White House on Friday. Later Friday, Secretary of State Antony Blinken and Japanese Foreign Affairs Minister Hayashi Yoshimasa will sign a U.S.-Japan Space Cooperation agreement. Kishida's Washington visit is the capstone on a weeklong tour of five European and North American capitals.

The Biden administration is under growing pressure from leftists in Latin America as well as U.S. lawmakers to expel Jair Bolsonaro from a post-presidential retreat in Florida following an attack by his supporters on Brazil's capital. But the far-right ex-president may preempt any plans for such a rebuke. On Tuesday, he told a Brazilian media outlet he would push up his return home after being hospitalized with abdominal pains. Bolsonaro arrived in Florida in late December and skipped the swearing-in of his successor, Luiz Inácio Lula da Silva. His visit to the Sunshine state went largely unnoticed in the U.S. until Sunday's attack by thousands of die-hard supporters who refused to accept Bolsonaro's narrow defeat in an October runoff.

U.S. President Joe Biden and Canadian Prime Minister Justin Trudeau have pledged their resolve to promote prosperity for people through the hemisphere as they opened wide-ranging talks in Mexico City. They were discussing the fragile security situation in Haiti, North American trade, political unrest in Brazil and more on the sidelines of the North American Leaders Summit. Biden and Trudeau met one-on-one before a three-way meeting later Tuesday with Mexican President Andrés Manuel López Obrador. The U.S. and Canadian leaders had a warm exchange during a brief appearance before reporters, which stood in stark contrast to a more brusque exchange between Biden and López Obrador on Monday.

Mexican President Andres Manuel López Obrador says he would consider accepting more migrants than previously announced under President Joe Biden's plan to turn away people who cross illegally into the United States. The comments came Monday as López Obrador, Biden and Canadian Prime Minister Justin Trudeau gather in Mexico City for a North American summit. They'll be discussing migration, trade and climate change. On Tuesday, the three leaders have their main summit meeting. Biden says the gathering will advance "shared priorities for North America." The leaders will discuss migration, climate change, the economy and other issues.