The RAF scrambled Typhoon jets to intercept Russian military jets approaching British airspace last night.
Planes were sent from the air base at Lossiemouth, north east Scotland, after two Russian Tu-160 Blackjack bomber planes were sighted flying over the Atlantic towards the UK.
A spokesman for the Ministry of Defence said the Russian aircraft were escorted until they were clear of the UK area of interest. At no time did they cross into UK sovereign airspace, he added.
It is the latest in a number of incidents in recent months in which Moscow has sent planes skirting the edge of British airspace in a legal but provocative move amid worsening international relations.
Scottish National Party leader Nicola Sturgeon has criticised a £500 million investment in the home of the UK's nuclear deterrent as "Tory arrogance of the worst kind".
Ms Sturgeon said it was wrong of Chancellor George Osborne to pre-empt the outcome of a vote on the renewal of the Trident nuclear deterrent, which is due to be decided by MPs next year.
The SNP leader said that while she wanted to see Faslane have a strong future as a conventional naval yard, the money should be invested in health and education and used to reverse "cruel" welfare cuts.
David Cameron has told officials that the UK needs to spend more money on special forces and aerial drones to help fight future threats.Read the full story ›
Defence Secretary Michael Fallon has told the House of Commons: 'We will always defend the right of the Falkland Islanders'. He said he had approved the "return of military support helicopters" with two Chinooks operational next year to allow "24/7 tactical mobility".
"We will be renewing the ground-based air defence system when Rapier comes out of service around the end of the decade. We will also maintain our commitment to provide a Falkland Islands patrol vessel," he added.
Britain is expected to increase the defences of the Falklands over fears that Argentina could launch a fresh invasion of the islands.
Defence Secretary Michael Fallon said land, sea and air defences were being upgraded in the face of a "very live threat" from the government in Buenos Aires.
The move comes amid reports that Russia is working on an agreement to lease 12 long-range bombers to Argentina which could be used to support a renewed attack. Mr Fallon, who is due to set out the Government's plans in a Commons statement later today, said the deal was unconfirmed but that Britain had to take account of any future possible threat.
Britain urgently needs to rebuild defence capabilities in the face of the growing threat from Russia, a group of MPs has warned.Read the full story ›
Defence cuts could put up to 30,000 military jobs at risk during the next parliament with the Army being hardest hit, a thinktank warned.Read the full story ›
Leaked documents reportedly show that Chinese spies hacked large amounts of data relating to the design of the F-35 Joint Strike Fighter jet.
Media reports suggest the alleged cyber theft is revealed in documents leaked to the German magazine Der Spiegel by former US security analyst Edward Snowden.
The F-35 is a stealth bomber developed by the US-based defence firm Lockheed Martin. The Royal Air Force is among the major customers for the jet.
The Sydney Morning Herald cites one document as saying that the theft amounts to "many terabytes of data" including information about the F-35's radar systems, engines and method for cooling exhaust gases.
The UK is set to send more warships to Bahrain's Mina Salman Port as it establishes a new £15 billion military base in the Gulf state.Read the full story ›
The Ministry of Defence has made a "huge investment" after awarding £3.2 billion of contracts to support the management of the UK's naval bases and help sustain more than 7,500 jobs.
BAE Systems, which manages HMNB Portsmouth, has been awarded a £600 million contract while Babcock, which manages Devonport and Faslane, has been given a £2.6 billion deal.
The Royal Navy's warships and submarines will be maintained and repaired as part of the deal, the MoD said.
This huge investment in our naval bases will directly sustain more than 7,500 jobs and skills across the UK and ensure that the Royal Navy's fleet of 56 warships and submarines are in the best possible condition and available for operations.
The contract will secure around 1,500 jobs at Faslane on the Clyde, up to 4,000 posts at HMNB Devonport and more than 2,000 at Portsmouth.