British foreign secretary Liz Truss warns Russia that any attack on Ukraine would be a "grave mistake", and that the UK is working closely with its NATO allies to provide support to Ukraine.
Ukraine and NATO forces launch joint naval drills in the Black Sea codenamed "Sea Breeze 2021". Russia has condemned the drills, with the Russian Defence Ministry saying that they would closely monitor the drills.
Russia warns the United Kingdom that it will bomb British vessels if any further provocative action is taken by the British Royal Navy in the Black Sea. Russia had previously summoned the British ambassador to Russia over this week's incident. The UK says that the vessel was in Ukrainian waters, that it was entirely right to use the route, and that the Royal Navy will always uphold international law and will not accept unlawful interference with innocent passage.
Prime Minister Boris Johnson announces that the UK's nuclear weapon arsenal will increase from 180 to 260 warheads, and that the UK will shift its foreign policy focus to the Indo-Pacific region, while remaining committed to NATO. The government's review also identifies Russia as the "most acute threat" to British security.
Ukraine's Infrastructure Minister Volodymyr Omelyan says the ports of Berdiansk and Mariupol are effectively under blockade as Russia refuses to let any Ukrainian vessels leave or enter the Sea of Azov. President Petro Poroshenko calls on NATO to send warships to patrol the Sea of Azov.
Ukraine's Joint Forces Operation says Russian-led militants have mounted 43 attacks on Ukrainian troops in Donbas in the past 24 hours, using artillery systems and 120mm and 82mm mortars 10 times, with no casualties among the Ukrainian servicemen. According to intelligence data, two militants are killed and three others wounded.
NATO and Russia conduct first-ever joint military exercises, codenamed 'Vigilant Skies 2011', to improve cooperation to protect passenger flights between NATO member states and Russia and to prevent hijackings such as the September 11 attacks. [http:--www.google.com-hostednews-afp-article-ALeqM5hQF7VtCdR9EUjyWhPLTni1OqWQlg?docId=CNG.a18ed43041c849816c2cfb3ba8d306c9.621 (AFP)] [https:--www.reuters.com-article-2011-06-07-us-russia-nato-exercise-idUSTRE7564T720110607 (Reuters)] [https:--www.npr.org-templates-story-story.php?storyId=137027665 (NPR)]date=August 2019