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Hello, I'm BBC presenter, Laura Kunsberg, and this is the interview from the BBC World Service,

the best conversations coming out of the BBC, people shaping our world from all over the world.

If you're not a little bit afraid, then you're not paying attention.

We have never seen a people so united.

Do not make that boat crossing. Do not make that journey.

Being born in America, feeling American, having people treat me like I'm not.

We're more popular than populism.

For this interview, I met former British Prime Minister, Boris Johnson,

and former head of the British Armed Forces, Admiral Sir Tony Radican,

at the Royal United Services Institute on London's Whitehall.

Mr Johnson was in Downing Street four years ago when the Russian invasion

of Ukraine began. As one of the driving forces behind the West's initial response, he's long been

critical of the slowness of allies in providing support to President Zelensky, which Mr Johnson

says has cost lives. Indeed, both he and Sir Tony believe the conflict might have been prevented altogether

if Western allies had paid more attention to Putin's increasing aggression

and his annexation of Crimea in 2014.

With the war grinding on, Mr Johnson's current successor, Sir Keir Starmour,

is building a coalition of the willing to preserve peace and stability in Ukraine,

but only if there is a deal to end the war.

However, Russia's president, Vladimir Putin,

would most likely view the presence of international troops,

...