The long-awaited report on Britain's involvement in the 2003 invasion of Iraq was released Wednesday. The independent report, which took seven years and was spearheaded by John Chilcot, stands at a staggering 2.6 million words and highlights many failures in intelligence and conduct that went into justifying Britain's role in the U.S.-led invasion.

The report immediately brought a wave of global scrutiny for Tony Blair, who was the prime minister of Britain at the time of the invasion. But one country in particular was quick to jump at the opportunity to say that it had warned Britain about the consequences of getting involved in Iraq.

The official Twitter account of the Russian Embassy in Britain put up an image that mocked the well-known British "Keep calm and carry on" poster, replacing the words with "Keep calm but I told you so." The tweet also called the Iraq War "unjust and highly dangerous."

Russia was one of the most vocal critics of Britain and the United States in the run-up to the 2003 invasion. Russian President Vladimir Putin said going to war would be a mistake not only for Iraq but also the international community.

The Chilcot report revealed that in a memo dated July 2002, Blair wrote to President George W. Bush about how the international community would respond to military action in Iraq. Blair suggested that without the United Nations' backing, Germany and France would not support the invasion, and, "most probably," Italy and Spain would not, either. After referring to the opposition he was facing back home, Blair says, "At the moment, oddly, our best ally might be Russia!"

This is not the first time that the Russian Embassy's Twitter account has mocked Britain's political problems, as my colleague Adam Taylor has written about before.

Read more: 

The masterful Russian tweet that exposed Britain's foreign policy panic

What the Chilcot inquiry says about Britain's decision to invade Iraq

'I will be with you, whatever': Read Blair's secret 2002 memo to Bush on Iraq