Elon Musk is leaving his US government role as a top adviser to President Donald Trump after spearheading efforts to reduce and overhaul the federal bureaucracy. His departure, announced Wednesday evening, marks the end of a turbulent chapter that included thousands of layoffs, the evisceration of government agencies and reams of litigation. Despite the upheaval, the billionaire entrepreneur struggled in the unfamiliar environment of Washington, and he accomplished far less than he hoped.

He dramatically reduced his target for cutting spending - from $2 trillion to $1 trillion to $150 billion - and increasingly expressed frustration about resistance to his goals. Sometimes he clashed with other top members of Trump's administration, who chafed at the newcomer's efforts to reshape their departments, and he faced fierce political blowback for his efforts. Musk's role working for Trump was always intended to be temporary, and he had recently signaled that he would be shifting his attention back to running his businesses, such as the electric automaker Tesla and the rocket company SpaceX.

Turkish President Recep Tayyip Erdogan said he has appointed a team of legal experts to start working on a new constitution - which critics say could allow him to remain in power beyond 2028, when his current term ends. Erdogan, who has led Turkey as president since 2014 and was prime minister for more than a decade before that, has advocated for a new constitution arguing that the current one, which was drafted following a military coup in 1980, is outdated and retains elements of military influence even though it was amended several times.

"As of yesterday, I have assigned 10 legal experts to begin their work, and with this effort, we will proceed with the preparations for the new constitution," Erdogan told his ruling party's local administrators in a speech. "For 23 years, we have repeatedly demonstrated our sincere intention to crown our democracy with a new civilian and libertarian constitution."

A US federal court on Wednesday blocked most of Donald Trump's sweeping import tariffs from going into effect, ruling that the president had overstepped his authority with the across-the-board global levies. The opinion marks a significant setback to the Republican leader as he bids to redraw the US trading relationship with the world by forcing governments to the negotiating table through tough new tariffs. Trump's global trade war has roiled financial markets with a stop-start rollout of levies that are aimed at punishing economies that sell more to the United States than they buy.

Trump argued that the resulting trade deficits and the threat posed by the influx of drugs constituted a "national emergency" that justified widespread tariffs. But the three-judge Court of International Trade effectively called a ceasefire, barring most of the restrictions that the president has announced since taking office in January. The White House slammed the ruling, arguing that "unelected judges" have no right to weigh in on Trump's handling of the issue.

Four people died as thousands of Palestinians burst into a United Nations warehouse in Gaza, tearing away sections of the building's metal walls in a desperate attempt to find food. Two people were fatally crushed and two others died of gunshot wounds after the crowd forced its way into the World Food Programme warehouse in Deir al-Balah on Wednesday afternoon, health officials said.

It was not immediately clear if Israeli forces, private contractors or others had opened fire. A Red Cross field hospital said injuries from the scene included women and children with gunshot wounds. Footage showed throngs of people shouting and pushing into the building while others threw bags of flour and boxes into the crowd. "Hordes of hungry people broke into WFP's al-Ghafari warehouse in Deir al-Balah, central Gaza, in search of food supplies that were pre-positioned for distribution," WFP said in a statement, which warned of "alarming and deteriorating conditions on the ground".