
Russia condemned for attacking Ukraine
Both the UK and US have promised to respond to Russia's actions.
Both the UK and US have promised to respond to Russia's actions.
An expert told Forces News installing a "puppet government" in Ukraine is Russia's "primary objective".
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Ben Wallace said the Russian president has made the mistake of having no allies in his actions.
The UK has already sent anti-tank weapons to Kyiv, as well as other military kit such as body armour, helmets and combat boots.
It comes after Putin called for an end to Ukraine's efforts to join NATO and the recognition of Crimea as part of Russia.
Images of heavy armour have prompted fears Russian tanks may already have crossed the border into Ukraine.
Russian President Vladimir Putin says peacekeeping forces are headed to newly-recognised separatist regions in the east of the country.
The PM has vowed to swiftly introduce the "first barrage" of sanctions against Russia as tensions with Ukraine rapidly escalate.
Boris Johnson was considering whether the actions could trigger the imposition of fresh sanctions on Russia.
Foreign Secretary Liz Truss has warned the price of invasion for Russia must be set "intolerably high".
Prime Minister's spokesperson said Russia "intends to launch an invasion and President Putin's plan has, in effect, already begun".
The exercises were initially set to finish on Sunday.
Boris Johnson admitted hard-hitting financial sanctions may not be enough to prevent invasion.
It comes as Western officials have warned that Moscow could invade Ukraine at any time.
It happened in war-torn eastern Ukraine, where the West fears a spike of violence might be used as a pretext for a Russian invasion.