A picture taken on March 26, 2020, shows Saudi policemen manning a checkpoint on King Fahd road in the capital Riyadh, after the Kingdom began implementing an 11-hour nationwide curfew, on the day of an emergency G20 videoconference, to discuss a response to the COVID-19 crisis. - G20 nations pledged a "united front" Thursday in the fight against coronavirus, saying they were injecting $5 trillion into the global economy to counter the pandemic amid forecasts of a deep recession. US President Donald Trump and Russian President Vladimir Putin joined the emergency videoconference chaired by Saudi Arabia's King Salman, who called for coordinated action while facing pressure to end an oil price war between Riyadh and Moscow that has roiled energy markets. (Photo by FAYEZ NURELDINE / AFP)