The US military is upgrading a Cold War base in the Caribbean it abandoned 20 years ago. Experts say it’s a step towards sustained operations in the region.

President Donald Trump threatens military action against Nigeria over Christian killings, orders aid suspension and warns of "guns-a-blazing" response to Islamic terrorism.

WASHINGTON -- WASHINGTON (AP) — The U.S. military has built up an unusually large force in the Caribbean Sea and the waters off the coast of Venezuela since this summer, when the Trump administration first began to shift assets to the region as part of its so-called war against narcoterrorism.

The U.S. has an estimated 200 tactical nuclear weapons, with roughly half deployed in Europe. The U.S. is believed to have around 100 tactical bombs deployed in five NATO countries on the continent, including in Turkey, Germany and Belgium.

A plan by the US Army to deploy small modular nuclear reactors could help the military replace fossil fuels shipped along precarious supply lines with electricity and synthetic fuels generated on-site.

Military members' pay has remained in limbo throughout the government shutdown. Here's what we know about the Oct. 31 paychecks.