Overview

• 108 former federal prosecutors and agents have urged Secretary of State Antony Blinken to secure Gambaryan's release.
• 16 members of Congress have labeled Gambaryan's detention a hostage situation and called for immediate action.
• Gambaryan, arrested in February, faces charges of money laundering and tax evasion, which he denies.
• Nigerian officials claim they are following due process, while US lawmakers argue the charges are baseless.
• Gambaryan's health is deteriorating, with reports of malaria and inadequate medical care in prison.