Following Hamas’s 7 October attack, this book argues, the Biden administration embraced Israel’s military campaign in Gaza with US-provided bombs that were soon massacring Palestinians while Washington did little to free hostages or shield civilians. Protests soon broke out across the US. Still, Joe Biden denied he was providing a blank check to Benjamin Netanyahu. He said he had a red line for Israel–but kept weapons flowing after it was crossed. Through extensive reporting, award-winning journalist Akbar Shahid Ahmed chronicles decision-making inside a White House which followed America’s worst instincts in foreign policy. Resisting criticism and course correction, Biden’s failures paved the way for Donald Trump to continue down an even darker path. Featuring sharp insights into the workings of the president’s inner circle and America’s national security establishment, Crossing the Red Line will be essential to understanding the US role in global affairs for decades to come.