Pfizer Paxlovid pill

Pfizer announces its Paxlovid pill as highly effective at preventing severe illness from COVID-19 among at-risk people. Also, the US approves its first major arms sale under the Biden administration to Saudi Arabia. And, nine groups in Ethiopia form an alliance — including Tigray forces and the Oromo Liberation Army — against Prime Minister Abiy Ahmed to seek a political transition, as rebel forces near the capital.