Nato has promised to study a parliamentary report which said that Russia's destabilisation of the Ukraine had exposed "serious deficiencies" in its preparedness to deal with a military threat from its former Cold War adversary.
Oana Lugescu, a spokesperson for the alliance said: “This is an important report and we will study it carefully."
She added that the 28 member states had already taken steps to reinforce collective defense with more planes in the air, more ships at sea, and more exercises on the ground, especially in eastern Europe.
At the Wales Summit in September, she said Nato leaders will adopt an action plan to reinforce the readiness of the alliance to ensure it is able to deal with all the threats it faces.
She added: "We are also considering reinforcement measures, the designation of bases and pre-positioning of equipment and supplies. We are reviewing our defence plans, threat assessments, intelligence-sharing arrangements and early-warning procedures."
More top news
Leaseholds on new-build houses could be banned outright under proposals to stamp out abuses of the system.
Angry protesters have demonstrated outside a police station following the death of a black man who died following a chase.
A heartbroken young mum has issued a poignant plea for a missing teddy bear which plays out the voice of her dead son.