Pentagon Papers whistleblower Daniel Ellsberg called Friday on the Pentagon chief to "protect us" from President Donald Trump.

Trump has announced what he called America’s “largest ever” tranche of sanctions against North Korea, in an attempt to increase pressure on the nuclear-armed country.

Rex Tillerson has said that the US is using "large sticks" instead of carrots to convince North Korea to give up nuclear weapons.

While the US has been a major military power all of the years after World War I, instances of showcasing military power on the streets in the form of military parades have been very rare, up until now.

The idea of developing so-called tactical nuclear weapons could lead to unintended consequences, an American military analyst says.

America’s flawed political leadership and planned expansion of nuclear weapons will lead to a major conflict with Russia and China, says an analyst.

India says it has successfully test-fired the Agni-5, a nuclear-capable intercontinental missile (ICBM).

US Secretary of State Rex Tillerson has said that North Korea must give up its nuclear weapons or it could trigger a military response.

Pope Francis has warned that the world stood on the "edge" of nuclear war, admitting the situation terrified him.

Arms control experts say Donald Trump’s new nuclear weapons policy could raise the risks of nuclear war.