(Reuters) -U.S. President Donald Trump's lavish welcome of Crown Prince Mohammed bin Salman to Washington this week, touted by many as rehabilitation of human rights record of Saudi Arabia's de facto ruler, has been followed by the kingdom ramping up its planned U.S. investments to $1 trillion.

The move marks a remarkable increase from the $600 billion that the world's largest exporter announced during Trump's visit to Riyadh six month ago. Bin Salman is scheduled to meet top U.S. corporate leaders on Wednesday.

By Sarah Marsh

WIESBADEN, Germany (Reuters) -Germany's interior minister on Wednesday backed Berlin’s decision to strip a man of his citizenship for supporting Hamas, saying naturalised citizens should forfeit their nationality when they are found not to uphold German values.

The decision comes as Germany tightens immigration and citizenship rules amid a debate about who belongs in the country and the rise of the far-right.

By Timothy Gardner

WASHINGTON (Reuters) -U.S. lawmakers cautioned against ushering in a nuclear arms race in the Middle East after the United States and Saudi Arabia said they signed an initial agreement on civil nuclear energy cooperation.

U.S. Energy Secretary Chris Wright, Interior Secretary Doug Burgum and Saudi Energy Minister Prince Abdulaziz bin Salman signed an initial civil nuclear cooperation agreement on Tuesday as Saudi Crown Prince Mohammed bin Salman, the kingdom's de facto ruler, made his first White House visit in more than seven years.

WASHINGTON (Reuters) -U.S. President Donald Trump said he will work to help end the war in Sudan after Saudi Crown Prince Mohammed bin Salman asked him to get involved in the matter.

"We've already started working on that," Trump said at a Saudi investment conference a day after he met with Saudi Arabia's de facto ruler at the White House.

US President Donald Trump said Wednesday he would start "working" to end the war in Sudan, after visiting Saudi Crown Prince Mohammed bin Salman asked him to help solve the devastating conflict.

Trump has until now barely commented on the conflict between Sudan's army and the paramilitary Rapid Support Forces (RSF), which has killed tens of thousands of people and displaced nearly 12 million since its outbreak in April 2023.

"His majesty would like me to do something very powerful having to do with Sudan," Trump said at a Saudi-US business forum attended by Prince Mohammed.

CAIRO (Reuters) -Israeli airstrikes killed 10 Palestinians in the Gaza Strip on Wednesday in a part of the enclave under Hamas control since a shaky ceasefire took effect in October, health authorities said.

Medics said two people were killed in Shejaia suburb east of Gaza City and four in the nearby suburb of Zeitoun. A third airstrike killed four Palestinians in Mawasi area, west of Khan Younis in the south of Gaza.

Residents of Lebanon's Ain al-Helweh Palestinian refugee camp described their fear and astonishment a day after a deadly strike that Israel said targeted a Hamas compound, a claim the Palestinian militant group rejected.

Tuesday night's raid, which Lebanese authorities said killed 13 people, was the worst since a ceasefire took effect last year between Israel and Hezbollah.

Emergency workers were still collecting human remains on Wednesday at the devastated site, located near one of the entrances to the overcrowded, impoverished Palestinian camp, an AFP correspondent saw.

By Tarek Amara

TUNIS (Reuters) -Thousands of young doctors went on strike across Tunisia on Wednesday to demand higher pay and warn of an impending collapse of the health system, part of a broader wave of social unrest convulsing the country.

A spate of environmental and anti-government protests prompted by a worsening economic crisis and disruptions in public services has posed the biggest challenge to President Kais Saied since he seized all power in 2021.

BEIRUT (Reuters) -The Israeli military stepped up airstrikes in south Lebanon on Wednesday, killing at least one person as it pressed a campaign of near-daily attacks which it says is designed to block a military revival by Iran-backed Hezbollah in the border area.

Israel has accused Hezbollah of trying to rearm since a U.S.-backed ceasefire its war with Hezbollah last year. The group says it has abided by requirements for it to end its military presence in the border region near Israel, and for the Lebanese army to deploy there.

By Patrick Werr

CAIRO (Reuters) -Egyptian restorers are reconstructing a dilapidated neighbourhood in Cairo's historic centre, dismantling houses and then rebuilding them with materials from the old structures in a model they hope can be applied to other districts.

The Darb al-Labbana neighbourhood is nestled on a slope directly under Cairo's more than eight-century-old citadel, a prominent landmark built by Muslim general Saladin, and abutting the back of a historic hospital complex. But in recent decades it had become largely uninhabitable.