Andrea Mitchell

President Trump said this week that he wants the Defense Department to begin testing nuclear weapons "immediately," but experts say that's wishful thinking.

California Gov. Gavin Newsom on Thursday called President Donald Trump's directive to restart testing nuclear weapons in the United States "weakness masquerading in strength.""Look, this is weakness masquerading in strength.

The Israeli military carried out airstrikes in the Gaza Strip on Tuesday, according to local health officials, throwing the tenuous U.S.-brokered ceasefire between Israel and Hamas into question

Hamas said it has agreed to release all Israeli hostages, alive or dead, as long as “the field conditions for the exchange are met” and expressed willingness to negotiate through mediators on President Donald Trump’s plan for peace in the Middle East

ANALYSIS: Even if Trump succeeds in the Middl East where his predecessors failed, a Nobel prize would still be a longshot.

President Donald Trump said on Thursday that he would not let Israel annex the occupied West Bank.

Tulsi Gabbard blindsided the CIA leader last week when she disclosed the name of an undercover CIA officer. Gabbard is under pressure to regain President Trump’s trust, insiders said.

The FBI searched the former Trump adviser's home in Bethesda, Maryland, as part of a “national security investigation in search of classified records,” a source familiar with the matter confirmed to NBC News.

A man wanted for war crimes sitting across the table from the leader of the country he invaded?

Finnish President Alexander Stubb, who has bonded with President Donald Trump over golf, gave NBC News an inside look at the White House meeting on Ukraine.

Trump said the two leaders will meet next Friday. It remains unclear whether Ukrainian President Volodymyr Zelenskyy will be involved with the high-stakes summit.