Clashes between protesters and law enforcement agents in Lagos turned bloody on Tuesday, despite a state-wide curfew, with eyewitnesses telling CNN that multiple demonstrators have been shot by soldiers.

The UK government has signed a contract for the first human challenge studies for the novel coronavirus, in which healthy volunteers are deliberately infected with the virus in a controlled setting, and some receive an experimental vaccine.

Australia will join India, the United States and Japan in next month's Malabar naval exercises in the Indian Ocean, in a move that is expected to strengthen the military relationship between the four democracies amid increased tensions with China.

Archaeologists in Egypt have discovered another large cache of unopened sarcophagi in Saqqara, adding to the trove of almost 60 coffins recently recovered from the ancient necropolis.

Six Russian military officers were charged on Monday for hacking into software using destructive malware to black out thousands of computers and cause nearly $1 billion in losses, actions that the Justice Department says were intended to support Russian government efforts to undermine, retaliate against, or otherwise destabilize worldwide computer networks.

President Donald Trump announced Monday that he intends to lift Sudan's state sponsor of terrorism designation -- news that comes as the transitional government in Khartoum could deliver him a diplomatic victory ahead of the US presidential election.

The British government has accused the GRU, Russia's military intelligence service, of carrying out cyberattacks on officials and organizations involved in planning the 2020 Olympics.

Wales will introduce a "firebreak" lockdown which will require everyone to stay at home, for two weeks, beginning October 23. CNN's Becky Anderson speaks with Welsh First Minister Mark Drakeford about the decision.

Inside the intensive care unit at Prague's Na Bulovce Hospital some patients are hooked up to ventilators through tracheostomy tubes, others are lying face down, to help them breathe. The doctors and nurses don head-to-toe hazmat suits; as coronavirus cases surge in the Czech Republic, the country can't afford to have health workers sidelined by the virus.