As G20 leaders met at Rio de Janeiro's Modern Art Museum for two days of talks, their agenda highlighted a shifting global order as US president-elect Donald Trump returns to power. Russian President Vladimir Putin did not attend the summit, and Moscow was represented by Foreign Minister Sergey Lavrov. Security in Rio de Janeiro has been strengthened with troops reinforcing police for the duration of the summit. A Brazilian army patrol came under gunfire near a Rio de Janeiro slum in the hours before the summit began, police said. No one was injured in the incident by the hillside Cidade de Deus community some 20 km (12 miles) west of the G20 venue
