European ministers are scrambling to draw up plans for a continent-wide 'drone wall' to counter Moscow's aerial incursions as the Kremlin warns that any strike on its aircraft would result in direct conflict with NATO. Nations including Denmark, Finland, Poland and the Baltic states will join Ukraine at a summit today to thrash out plans for what EU chief Ursula von der Leyen has described as 'the bedrock of credible defence.' The talks come after swarms of drones forced airports to close across Scandinavia, and as the Kremlin is accused of launching a campaign of hybrid attacks across Europe.Poland, which has already brought down Vladimir Putin's drones in recent weeks, has vowed it will down any hostile objects over Ukraine under fast-tracked laws giving the military greater freedom to act.However, in a chilling escalation, Russia's ambassador to France warned that shooting down its planes 'would be war.' On Thursday, the country's foreign minister also accused NATO of waging 'real war' on it and claimed the organisation was directly involved in its conflict with Ukraine. The ministers' meeting in Brussels is expected to focus on creating joint systems to detect and destroy drones that threaten civilian and military infrastructure. The European Commission has indicated that the cost of the wall could be covered by its €150bn Security Action for Europe loans scheme. Danish defence minister Troels Lund Poulsen said his country had already been hit by what he called a 'hybrid attack' after four airports were disrupted by drones on the same night. Poulsen said: 'There can be no doubt that everything points to this being the work of a professional actor when we are talking about such a systematic operation in so many locations at virtually the same time. 'This is what I would define as a hybrid attack using different types of drones. This is an arms race against time because technology is constantly evolving.'Danish prime minister Mette Frederiksen has spoken to NATO secretary general Mark Rutte about 'the serious situation related to drones over Danish airports.'