KIGALI (Reuters) – British Prime Minister Boris Johnson said on Friday a decision by the Supreme Court to overturn the landmark 1973 Roe v. Wade ruling that recognised a woman’s constitutional right to an abortion was a “big step backwards”. “It’s a very important decision. I’ve got to tell you, I think it’s a big step backwards,” he told a news conference in Kigali, where he is attending a Commonwealth meeting. “I’ve always believed in a woman’s right to choose and I stick to that view and that is why the UK has the laws that it does.” (Reporting by Andrew MacAskill, writing by Elizabeth Pipe…