__ go —— go to the next step. at the australian open, home favourite and world number one ashleigh barty made it look easy as she progressed to the semi finals. she dominated the americanjessica pegula in straight sets, 6—2, 6—love, in her bid to become the first australian to win the singles title in 44 years. and she will face madison keys, who's into herfirst grand slam semifinal for four years after beating french open champion barbora krejcikova 6—3, 6—2. in the men's draw, rafa nadal�*s hopes of a 21st grand slam are still alive. he came out on top against canada's denis shapovolov in his first five setter of the tournament so far. that's all the sport for now. back to you, marianne. thank you very much, indeed. the prime minister has said britain is prepared to deploy troops to protect nato allies in europe should russia invade ukraine. borisjohnson said vladimir putin would face "ferocious" ukrainian resistance. he urged other european nations to be ready to put in place hard—hitting sanctions