Russian President Vladimir Putin told Ukraine on Friday to sit down for negotiations with Moscow-backed separatists in Ukraine's east, citing rising tensions in the region and calling for the implementation of the Minsk peace process. At a news conference in Moscow, Putin also said Russia was ready to follow a negotiation track with NATO on its security demands, but that the US-led military alliance and Washington were not yet in a mood to engage on Moscow's key concerns. The remarks came as Moscow is facing off against the West over European and Ukrainian security, tensions worsened by large Russian drills in Belarus. Meanwhile, Russian President also welcomed his close ally Belarusian strongman Alexander Lukashenko to the Kremlin on Friday, announcing the leaders would discuss military cooperation and oversee upcoming war games. "We will of course talk about the situation in the region, assess how military cooperation is going, including the ongoing military drills," Putin told Lukashenko ahead of talks. Read more: Rebels accuse Ukraine of shelling as Russian media reports tank withdrawals "Tomorrow we will even participate in one of the most significant events in this complex of military cooperation," the Russian leader said. The Russian defence ministry announced earlier Friday that Putin would oversee military exercises the following day that would involve the launch of cruise and ballistic missiles. Belarus, wedged between Russia and European Union member states, became more closely aligned with Russia in the wake of historic anti-Lukashenko protests in 2020. "Our Western partners — as you call them — have brought the military-political spectrum to the forefront, and we have to react to it, including by holding military exercises and through diplomacy," Lukashenko told Putin in Moscow. He also accused Western leaders of "scaring the world by saying that 'tomorrow' we will attack, encircle, destroy Ukraine". Washington has estimated that some 30,000 Russian troops have deployed to neighbouring Belarus as part of joint exercises that are due to run until Sunday. Also read: US says war appears imminent after shelling on Ukraine front line Those drills as well as other large-scale exercises near Ukraine have fuelled concerns in European capitals and Washington that Moscow is preparing an attack on its neighbour. Russia has denied developing plans and accused Ukraine of breaching ceasefire agreements in the east of the country, where the army is fighting pro-Moscow separatists.