It's not a summer heat wave that's making European leaders and businesses sweat. It's fear that Russia's manipulation of natural gas supplies will lead to an economic and political crisis next winter. Or, in the worst case, even sooner.

Here are key things to know about the energy pressure game over the war in Ukraine:

As Colombia's voters put aside a longtime antipathy to leftists and chose one as their new president, they also carved out another milestone — electing the country's first Black vice president.

When former leftist rebel Gustavo Petro takes office as president on Aug. 7, a key player in his administration will be Francia Marquez, his running mate in Sunday's runoff election.

Tens of thousands of railway workers walked off the job in Britain on Tuesday, bringing the train network to a crawl in the country's biggest transit strike for three decades.

About 40,000 cleaners, signalers, maintenance workers and station staff were holding a 24-hour strike, with two more planned for Thursday and Saturday. Compounding the pain for commuters, London Underground subway services were also hit by a walkout on Tuesday.

Holed up in a bombed-out house in eastern Ukraine, Ukrainian troops keep a careful accounting of their ammunition, using a door as a sort of ledger. Scrawled in chalk on the door are figures for mortar shells, smoke shells, shrapnel shells, flares.

Despite the heavy influx of weapons from the West, Ukrainian forces are outgunned by the Russians in the battle for the eastern Donbas region, where the fighting is largely being carried out by way of artillery exchanges.

Villagers in northeastern Bangladesh crowded makeshift refugee centers and scrambled to meet boats arriving with food and fresh water as massive floods, which have killed dozens of people and displaced hundreds of thousands there and in neighboring India, continued to wreak havoc Tuesday.

In Sylhet, one of the worst-hit areas in the extreme northeast of the country near the border with India, villagers waded, swam and paddled makeshift rafts or small skiffs to a boat delivering aid that had moored to one shelter, its ground floor covered half way to the ceiling with water.

The Islamic State group has claimed responsibility for Monday's attack on a civilian bus in northern Syria that killed 13 people and wounded three.

The extremist group said in a statement late Monday that its gunmen attacked the bus with automatic rifles. It also posted photos of the attack. The Syrian army said 11 of those killed were soldiers. Three soldiers were also wounded, the military said.

One, two, three, stop. Five, six, seven, stop: A group of young Syrian men and women step, sway and twirl to the backdrop of salsa music, dancing their worries away.

For an hour a week in a Damascus studio, their instructor Adnan Mohammed, 42, teaches a class the basics of Latin dancing, helping his students forget the troubles of war — if even briefly.

The headlines on the newsstands in Seoul blared fresh warnings of a possible nuclear test by North Korea.

Out on the sidewalks, 28-year-old office worker Lee Jae Sang already had an opinion about how to respond to North Korea's fast-growing capacity to lob nuclear bombs across borders and oceans.

When Syrian refugee Fadel Alkhudr arrived in Germany in 2015, the first thing he saw when he stepped out of the train in Cologne was the city's majestic cathedral.

Alkhudr, 42, became so fascinated by the famous Gothic landmark on the Rhine river with its twin spires and elaborate ornaments that he spent hours looking at it. He took photos of it, drew sketches, and eventually started carving a wooden replica.

A flight by private Syrian airline Cham Wings landed on Tuesday at an airport used by Russia's military in the coastal province of Latakia in western Syria, the country's state news agency reported.

The flight from the city of Sharjah in the United Arab Emirates was the first to land in at the airbase since Damascus airport was damaged by an Israeli airstrike earlier this month.