Brazil's foreign minister called for reforms of the United Nations and other multilateral institutions on Wednesday while criticising their inability to prevent global conflicts, as his country kicked off its presidency of the Group of 20 nations. Mauro Vieira told fellow foreign ministers during opening remarks for a G20 meeting in Rio de Janeiro that the UN Security Council has been unable to prevent or halt conflicts such as those playing out in Ukraine and the Gaza Strip. "Multilateral institutions are not adequately equipped to deal with current challenges, as demonstrated by the unacceptable paralysis of the Security Council in...