Ukrainian President Volodymyr Zelensky said his bilateral meeting with US President Donald Trump in the Oval Office on Monday was "very good" and "constructive," as European leaders met with the US leader to discuss security guarantees for Kiev.

President Trump and Ukrainian President Volodymyr Zelensky held a much more cordial Oval Office meeting in front of TV cameras Monday than the fiery eruption that took place in front of the room’s fireplace in February.

It was a striking contrast to the meeting six months ago, when Trump, red-faced and angry, accused an agitated Zelensky of failing to show enough gratitude to the United States. The blowup was so heated that the Ukrainian delegation was sent from the White House without being allowed to eat their waiting lunch.

The vice-president upbraided him for ingratitude and he was accused of disrespecting the occasion by failing to wear a suit. This time around, weeks of coaching by European leaders paid off. Mr Zelensky thanked his host seven times in 50 seconds as cameras rolled in the Oval Office.

US President Donald Trump and Ukraine's Volodymyr Zelensky held a highly publicized meeting in the Oval Office on Monday as European leaders arrived in Washington for high-stakes talks on ending the war in Ukraine.

The meeting was a complete contrast to the Oval Office bust up in February, with the US President praising Mr Zelensky for his military-style suit - agreeing he looks 'fabulous'.

The last time they met in the Oval Office, it ended in an argument in front of the world's media. It was a friendlier encounter this time, with Zelensky handing a letter to Donald Trump from his wife to the First Lady, Melania Trump.

Just months after a tense Oval Office clash that ended in a shouting match, President Trump and Ukrainian President Volodymyr Zelensky struck a surprisingly cooperative tone in their latest White House meeting.

How many times Zelensky said thank you during his meeting with Donald Trump on August 18? Eight times. The Ukrainian president opening remarks in the Oval Office were, in fact, a series of Thank yous only.

It was only a few months ago that U.S. President Donald Trump and Ukrainian President Volodymyr Zelensky last met in the Oval Office, but today's face-to-face between the two leaders looked markedly different.

The Ukrainian leader was kicked out of the White House in a previous meeting after a shouting match erupted between the two leaders during a press conference.