The war in Ukraine that began a year ago has killed thousands, forced millions to flee their homes, reduced entire cities to rubble and has fueled fears the confrontation could slide into an open conflict between Russia and NATO.

A look at some of the main events in the conflict.

After years of war, residents of areas in northwest Syria struck by a massive earthquake are grappling with their new and worsening reality.

Almost one week after the devastating 7.8 magnitude earthquake struck northern Syria and neighboring Turkey, the United Nations has acknowledged an international failure to help Syrian quake victims.

A magnitude 7.8 earthquake shook Turkey and Syria on Monday, killing more than 4,000 people in the two countries. The death toll is expected to rise as rescuers working in cold and snow look for trapped people in the rubble of toppled buildings.

Here are some of the world's deadliest earthquakes in the past 25 years:

A major 7.8 magnitude earthquake followed by another strong quake devastated wide swaths of Turkey and Syria early Monday, killing thousands of people.

Here's what to know:

Most wealthy Gulf Arab nations followed Saudi Arabia's lead in recent years and ostracized crisis-hit Lebanon because of the growing influence of the Iranian-backed Hezbollah. The exception was Qatar.

Doha has been silently expanding its influence in Lebanon. It continued receiving Lebanese leaders and pumped tens millions of dollars into helping the country's armed forces amid a historic economic meltdown.

Pakistan's Peshawar was once known as "the city of flowers," surrounded by orchards of pear, quince and pomegranate trees. It was a trading city, situated at the gates of a key mountain valley connecting South and Central Asia.

But for the past four decades, it has borne the brunt of rising militancy in the region, fueled by the conflicts in neighboring Afghanistan and the geopolitical games of great powers.

U.S. Secretary of State Antony Blinken on Tuesday wrapped up a two-day visit to Israel and the occupied West Bank with no visible signs of progress toward halting one of the deadliest outbreaks of Israeli-Palestinian violence in years.

The anemic outcome highlighted what appears to be the limited influence the Biden administration has over Israel's new government, which is dominated by hard-line nationalists who oppose concessions toward the Palestinians. But it also reflected a years-long process that has turned the U.S. into little more than a conflict manager — drawing Palestinian accusations that Washington is a dishonest broker with a bias toward Israel.

An alarming spike in Israeli-Palestinian violence and sharp responses by both sides are testing the Biden administration as U.S. Secretary of State Antony Blinken plunges into a cauldron of deepening mistrust and anger on visits to Israel and the West Bank this week.

What had already been expected to be a trip fraught with tension over differences between the administration and Israeli Prime Minister Benjamin Netanyahu's new far-right government has grown significantly more complicated over the past four days with a spate of deadly incidents. Blinken's high-wire diplomatic act begins on Monday after he completes a brief visit to Egypt that has been almost entirely overshadowed by the deteriorating security situation in Israel and the West Bank.

When a massive explosion killed more than 215 people at Beirut's port in 2020, Lebanese officials promised a swift investigation that would bring culprits to justice within days.

But more than two years later, the probe has been repeatedly stalled, with lead investigator Tarek Bitar accused this week of insubordination for resuming the probe and charging top officials.

Lebanon, which is in a deep economic, social and political crisis, is also witnessing a major showdown between a judge investigating a devastating explosion and the country's top prosecutor.

Here is a recap of events since protests erupted in October 2019: