western officials say russia has mobilised enough troops to be able to invade ukraine at the drop of a hat. in a phone call, joe biden and borisjohnson agreed a deal was still possible. moscow has dismissed the warnings of an invasion — it's foreign minister said on monday diplomacy is far from exhausted. canada's prime minister has invoked emergency powers to try to end the weeks of disruptive protests against covid measures. the emergencies act gives the government enhanced authority for 30 days, including the power to prohibit public gatherings and travel. the us accountancy firm mazars says it can no longer stand behind ten years of financial statements, for the trump 0rganisation — and has severed ties with its client. the statements are crucial to legal cases alleging the former president and his company exaggerated the value of its assets. mr trump denies wrongdoing. now on bbc news, professional