UK Prime Minister Boris Johnson on Tuesday brushed off concern about his upcoming trip to Saudi Arabia, as part of efforts to wean the West off Russian oil after its invasion of Ukraine. Johnson is expected to meet Crown Prince Mohammed bin Salman this week, hoping he can persuade him to boost the Gulf state’s oil production to offset the impact of economic sanctions against the Kremlin on global energy prices. The visit is controversial, however, with longstanding concern about the wealthy kingdom’s human rights record, and aftera mass execution of 81 people last weekend. Bin Salman has also …