Four terrorists that attacked a peaceful rally in Kharkiv today were trained in Russia and using Russian weapons, the Security Service of Ukraine said today. They had planned a series of further attacks following the bombing, which killed at least two and wounded 11, but were arrested before they could carry them out.

" The terrorists were captured while attempting to attack with a flamethrower a club where soldiers and volunteers gather, as well as a shopping centre," Markiyan Lubkivskiy, a senior adviser in the Security Service of Ukraine, known as the SBU, posted on Facebook.

The attack in Kharkiv is just the latest in a series of successful and unsuccessful terror attacks in the country, with an attempt to blow up a restaurant in Odessa thwarted by police overnight, according to local media. Ukrainian security officials, speaking to Mashable in December on condition of anonymity, said they believe the terror campaign to be sponsored by Russia as an attempt to destabilise the country.