A former FBI agent said that visa overstays are a "national security issue" after 15 people were injured in a terror attack in Boulder, Colorado.

The Trump administration has tapped a former army special operations officer with significant business experience who once oversaw a large U.S.-Russia investment forum to manage Europe and Russia policy at the National Security Council,

The work will be primarily performed in and near Washington with an estimated completion date of July 2026, the Pentagon said.

Sam Altman’s OpenAI has secured a $200 million contract to provide artificial intelligence support to the US Defense Department.

President Trump will meet with his national security team today as questions mount over how involved the U.S. will be in the conflict between Israel and Iran. NBC News' Monica Alba reports more. Executive Director for Global Security at Flashpoint Andrew Borene and former Assistant Secretary of State under the Obama Administration Joel Rubin join Chris Jansing to weigh in.

The US president has called for Iran's "unconditional surrender" and warned Tehran that US patience is "wearing thin". Follow live.

Keir Starmer’s government will shortly publish a new national security strategy that will broaden the scope of what is considered vital to UK interests to include critical domestic industries, crime and the online world,

Fox News Digital spoke to SkillStorm's CEO about the hurdles of federal hiring and what his company is doing to address those using technology.

Italy has responded to European Union queries on the conditions it has imposed on UniCredit's bid for Banco BPM by saying domestic savings are a matter of national security, sources familiar with the matter told Reuters.

Chief Executive John Lee says ‘small portion’ of national security arrests reinforces message that such legislation only affects minority.