Oscar Arias, a former Costa Rican president and Nobel Peace Prize winner, had his US visa revoked without a clear explanation.
His public criticism of President Trump's actions, particularly his perceived imperial behavior, might have played a significant role.
Arias also hinted his establishment of diplomatic relations with China while in office could have caused the visa cancellation.
This incident highlights the complex geopolitical dynamics between the US, China, and smaller nations, causing questions about international relations.
