In Middle East this week, the Islamic State group extended its reach by releasing a video shot in Libya showing militants beheading of 21 Coptic Christians from Egypt, many from the same village.

Grief washed over Egypt, prompting a swift response from the country as its fighter jets pounded militant targets in Libya. In Tripoli, Christians gathered for Mass and government forces battled militants west of the capital.

A winter storm swept through the region, blanketing Israel and Lebanon in snow. Gaza City's coastline saw high waves.

In Cairo, Al-Jazeera English journalist Baher Mohammed reacquainted himself with his dog, Gatsby, after more than a year in prison on terrorism-related charges.

Also in Egypt, families gathered to celebrate the birthday of the grandson of the Prophet Muhammad during commemorations for Moulid al-Hussein.