Latest News États-Unis (United States)

Researchers have achieved a breakthrough in Floquet engineering, revealing that excitons quasiparticles formed within semiconductors can alter material properties far more effectively than light alone. This discovery paves the way for on-demand creation of exotic quantum materials. Scientists from the Okinawa Institute of Science and Technology......

Kremlin spokesman Dmitri Peskov acknowledged Monday that U.S. President Donald Trump would etch himself into world history if he succeeds in acquiring Greenland, declining to label such an outcome positive or negative. "We might set aside whether this benefits or harms, or aligns with international law," Peskov said. "International......

Elon Musk's xAI faces intense worldwide scrutiny as its AI chatbot Grok triggers investigations, bans, and lawsuits across multiple countries for producing non-consensual sexualized images of women and children. This crisis prompted Musk to admit Grok requires a "moral constitution," coming after weeks of mounting pressure from......

President Donald Trump's recently announced Peace Council for Gaza is swiftly broadening its international footprint, with Hungary, Vietnam, and Kazakhstan confirming participation as dozens of countries review invitations to this body tasked with overseeing Gaza's ceasefire next phase. The White House outlined the council last week......

President Donald Trump's newly unveiled Peace Council has drawn cautious responses from governments worldwide, with diplomats warning that the U.S.-led body could undermine the United Nations and fracture the post-World War II international order. Invitations to join the council, which Trump would chair for life, began arriving in about......

President Donald Trump told Norwegian Prime Minister Jonas Gahr Støre he feels unbound by purely peaceful considerations after being denied the Nobel Peace Prize, using the perceived slight to rationalize U.S. control over Greenland in a letter that has sent shockwaves through transatlantic relations. First revealed by PBS journalist......

European leaders have united in response to U.S. President Donald Trump's tariff threats, with Germany's finance minister declaring that a breaking point has been reached. Speaking at a joint press conference in Berlin alongside his French counterpart, Lars Klingbeil emphasized that the European Union stands ready to activate its most......

President Donald Trump escalated his push to acquire Greenland on Sunday, asserting that NATO has been alerting Denmark for two decades about a Russian security threat near the Arctic territory. He framed this as a key rationale for U.S. control, though the claim drew sharp rebuttals from Danish military leaders and the Kremlin. Posting on......

The International Monetary Fund has upgraded its global growth projection for 2026 to 3.3 percent, crediting a surge in artificial intelligence investments and easing trade tensions for bolstering an economy showing unexpected resilience amid lingering political uncertainties. This marks a 0.2 percentage point increase from October estimates.......

The Kremlin announced Monday that President Vladimir Putin received an invitation to join U.S. President Donald Trump's "Peace Council," with Moscow studying the proposal and hoping for fresh Washington contacts. Trump sent letters to about 60 world leaders seeking founding members for the new international body, which he would......

US President Donald Trump has told Norwegian Prime Minister Jonas Gahr Støre that he no longer feels compelled to devote himself exclusively to peace efforts, following what he described as Norway’s refusal to award him the Nobel Peace Prize. In a message disclosed on Monday, Trump argued that his diplomatic achievements —......

President Donald Trump has sharpened focus on perceived gaps in Canada's Arctic defenses, voicing private concerns to advisors over recent weeks about vulnerabilities to Russian and Chinese threats along its northern border, NBC News reports. This renewed scrutiny hits as the Trump administration presses an aggressive Arctic strategy centered......

Italian Prime Minister Giorgia Meloni broke ranks with U.S. President Donald Trump on Sunday, labeling his tariff threats against European nations over Greenland a "mistake" and urging dialogue to avert escalation. Speaking to reporters during a South Korea visit, she disclosed a recent direct call with Trump to voice disagreement......