Meanwhile in Russia, there's a bizarre anti-smoking advert featuring Barack Obama

A poster declaring "smoking kills more people than Obama” has gone viral after it was spotted in central Moscow.

Russian parliament's only liberal MP, Dimitry Godkov, posted a picture of the large ad to Facebook, which he saw at a bus shelter in Moscow.

It features a close up of the American president - who claims to have quit smoking in 2007 - dragging on the remains of a cigarette, the text reads:

Smoking kills more people than Obama, even though Obama has killed a lot of people.

Don't smoke! You don't want to look like Obama.

Gudkob wrote that he found the poster "disgusting and embarrassing", and, as the Guardian reports, the ad quickly sparked debate and extensive Russian media coverage.

The poster - for which no attribution has been found and Moscow authorities have offered no comment - is the latest in a string of Russian depictions of the US president as a mass killer.

Last week a student video with the message "the president of the United States kills 875 people every week" appeared on YouTube, where it has been viewed more than 500,000 times.