British Maritime Patrol Aircraft were conducting missions off the west coast of Ireland ahead of a planned Russian live-fire naval exercise to the south of Ireland later this week.

"The Ukrainian capacity to defend and to oppose a Russian land invasion is now much larger than it used to be, with the delivery of the UK aid last week."

The UK is the "leading European power" assisting Ukraine defend itself against Russia according to an analyst giving evidence to a British parliamentary committee.

A Royal Air Force C-130 Hercules aircraft conducted a series of airdrops to resupply survey depots in Antarctica. 

An American aircraft designed to 'sniff' radioactivity associated with the use of nuclear weapons has arrived in the United Kingdom.

A British RC-135 aircraft has completed a deployment monitoring Russian forces in Kaliningrad on the Baltic Sea, Belarus north of Ukraine as well as Russian forces in and around Crimea on the Black Sea.

The Royal Navy is moving forward with 'Project Vampire', a plan to procure low-cost fixed-wing drones for intelligence, surveillance, reconnaissance and other tasks.

50 Apache AH-64E attack helicopters have been purchased from the United States with 14 of them having been delivered to the British Army so far.

British jets will be "fighting" the United States Air Force and Royal Australian Air Force.

British surveillance aircraft operating near the Russian border isn't unusual but there has been a significant increase in the frequency of missions to the coast of Crimea in recent days.