British Prime Minister Theresa May has called for the strengthening of transatlantic cooperation, in particular, to respond to Russia's actions in Ukraine.

"As we look at the world today we are also facing profound challenges to the global order: to peace, prosperity, to the rules-based system that underpins our very way of life. And in the face of these challenges, I believe it is our defining responsibility to come together and reinvigorate the transatlantic partnership... That is true whether fighting the ideologies of Daesh, developing a new global approach to migration, ensuring the Iranian nuclear deal is properly policed or standing up to Russia’s hostile actions, whether in Ukraine, the Western Balkans or in cyberspace. And in all these cases, our success depends on a breadth of partnership that extends far beyond the institutional mechanisms for cooperation with the EU," she said at the 54th Munich Security Conference on Saturday, February 17.

According to the prime minister, the UK and the EU should maintain cooperation in the sphere of application of sanctions after Brexit.

May added that it was in the common interest of the EU and the UK to conduct joint operations and cooperation in the field of cybersecurity.

"Last year's 'NotPetya' cyber-attack showed why we also need to work closely to defend our interests in cyber space. This reckless attack - which the UK and partners have attributed to Russia - disrupted organizations across Europe costing hundreds of millions of pounds. To contend with a truly global threat such as this we need a truly global response," she said.