ISIS released an image threatening to attack the 2018 FIFA World Cup in Russia

Last week ISIS released an image featuring bullet-ridden photos of Trump and Putin, inviting attacks on the two

Russia previously witnessed an ISIS attack in April when a bomb detonated on the underground, killing 14

Thousands of Russians have traveled to the Middle East to fight for ISIS

ISIS propaganda chiefs have released a chilling threat to attack the 2018 FIFA World Cup in Russia.

The terrorist group has published an image of a rifle-carrying ISIS fighter and a bomb bearing the group's infamous black flag in front of a football stadium.

The official symbol of the 2018 World Cup finals is also included in the alarming promise to bring mayhem to the tournament.

St Petersburg, Russia's second largest city, was the scene of a horrific ISIS attack when a briefcase bomb detonated on the underground in April, killing 14 people.

The blast was in retaliation for Russia's airstrikes in Syria that have helped bring ISIS to its knees.

Last week ISIS released another propaganda image featuring bullet-ridden photos of President Donald Trump and Russian President Vladimir Putin and inviting its followers to stage more attacks on the group's two leading foes abroad.

The image, shared throughout pro-ISIS channels on the encrypted messaging application Telegram and attributed to Al-Wafaa Media Foundation, featured an excerpt of a Quranic verse manipulated by the ISIS followers to urge fellow jihadis to take every opportunity to conduct deadly attacks in the U.S. and Russia.

Despite the jihadis suffering severe territorial losses to military campaigns sponsored by Moscow and Washington, the image also claimed that ISIS would overcome its enemies on the battlefield.

"Lie in wait for them at every chance to ambush," the text reads beneath photos of Trump and Putin pasted to gun target practice sheets. "The Levant is the graveyard of the Russians and Americans."

Thousands of Russians, mainly from central Asia, have traveled to the Middle East to fight for ISIS. Experts in Moscow believe around 2,400 joined the regime in 2015 alone.

'Despite his government's defense doctrines stating that the U.S. and NATO is Russia's greatest threat, I have always felt that Putin regards Islamic extremism to be the most immediate threat,' Ian Brzezinski, senior fellow at the Atlantic Council said.

"Putin cut his teeth destroying the Chechens. He regarded their rebellion as a manifestation of Islamic extremism."

This article has been adapted from its original source.