That's according to Sky News, Ukrinform reports.
"President Putin has used about 25% of his army's power to gain a tiny amount of territory and 50,000 people either dead or injured. […] Any notion that this is a success for Russia is nonsense. Russia is failing. […] It might be getting some tactical successes over the last few weeks. And those might continue for the next few weeks. But Russia is losing strategically," said Admiral Tony Radakin, the head of the UK's armed forces.
He added that Moscow had been forced to give up its objectives of taking over most Ukrainian cities and was now engaged in a tactical battle in which fighting is "tough."
"The Russian machine is grinding away, and it's gaining a couple of - two, three, five - kilometers every day. And that's tough for Ukraine, but this is going to be a long fight. And we're supporting Ukraine, Ukraine has shown how courageous it really is. And Russia has vulnerabilities because it's running out of people, it's running out of hi-tech missiles," Radakin said.
He also stressed that Ukrainians are courageous people.
"They're ingenious people in terms of how they're taking the fight to the Russians. But they're also honest people, with saying actually they need some help," the admiral said.
According to him, the United Kingdom will continue its support for Ukraine.
Russian President Vladimir Putin on February 24 announced the beginning of a full-scale invasion of Ukraine. Russian troops are shelling and destroying critical infrastructure and residential areas of Ukrainian cities, towns and villages using artillery, multiple rocket launchers, and ballistic missiles.
