Egypt's military has carried out dawn bombings of Islamic State targets in Libya, according to reports by state television.
Seven days of mourning were declared in Egypt after Islamic State militants released a video claiming to show the murder of 21 Egyptian Christians kidnapped in Libya.
The video has been condemned by governments around the world, while the Egyptian leadership vowed to respond to the "criminal killings".
Egypt has called on the US-led coalition fighting Islamic State in Iraq and Syria to broaden the scope of their operations to include Libya, highlighting how the insurgent group has expanded its reach around the Arab world.
After the strikes, Egyptian president Abdel-Fattah el-Sissi spoke with France's president and Italy's prime minister about the Libya situation.
"What is happening in Libya is a threat to international peace and security," said el-Sissi, who also banned all travel to Libya by Egyptian citizens.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.