From BBC News.

Ukrainian president Volodymyr Zelensky has claimed that Russia is using its oil tankers to launch reconnaissance operations across Europe.

His comments follow multiple reports of drone sightings in Germany, as discussions over how to adequately reinforce Nato airspace continue. But what evidence is there that Russia is responsible for these apparent incursions, as the Kremlin points the finger at Ukraine?

On this episode Jamie Coomarasamy and Vitaly Shevchenko are joined by Ukraine correspondent James Waterhouse and BBC Verify’s Olga Robinson to answer your questions.

What would a drone wall look like? How can Europe win round Hungary’s Viktor Orbán? And could Ukraine’s allies deploy soldiers to the frontline?

Listen to the full episode here: https://www.bbc.co.uk/sounds/play/p0m7pqdh

Subscribe here: http://bit.ly/1rbfUog

For more news, analysis and features visit: www.bbc.com/news
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