<span style="color: #222222;">Ukraine dismissed a Russian claim that its forces had shelled a border post on Monday, denouncing it as "fake news" designed to inflame tensions.<br />''<br />''Russia's Federal Security Service (FSB) had earlier alleged that a projectile fired from Ukraine had destroyed a border facility used by its guards.<br />''<br />''Video released by the FSB showed a small, apparently, one-room shed with its roof and walls caved in and a Russian flag leaning against strewn debris. They claim increased concerns that Moscow is seeking a pretext to justify its military build-up on the border of Ukraine, which US intelligence says is an invasion force.<br />''<br />''But Ukraine's spokesman for its joint military operation against Russian-backed separatists in eastern Ukraine was unimpressed by the Russian allegation.<br />''<br />''They conduct different provocations and produce fake news every day, even a couple of times per day, Pavlo Kovalchuk told reporters in Kramatorsk.<br />''<br />''Washington has repeatedly warned that Moscow is trying to justify a planned invasion by planting fake stories of Ukrainian aggression.<br />''<br />''Russian-backed leaders in the rebel enclaves in Donetsk and Lugansk have ordered general mobilization and the evacuation of civilians, while shelling has intensified.<br />''<br />''The FSB statement was released just as Russia's President Vladimir Putin was to chair an unscheduled meeting of his national security council.<br />''<br />''The statement added that no one had been injured in the incident and that Russian military engineers had arrived at the scene.<br />''<br />''Ukraine has been fighting separatists since 2014 when Russia annexed the Crimean peninsula after street protests in Kyiv overthrew a pro-Moscow president. More than 14,000 people have already died in the fighting.</span><br />