Iran Frees Seized South Korean Ship Amid Dispute Over Funds

In January, Iranian troops detained a ship in the Strait of Hormoz, accusing it of pollution. This action was perceived as a tactic to pressure South Korea into releasing Iranian funds held in their banks. While the crew was released in February, the ship and its captain remained detained. This incident occurred amidst ongoing discussions between Iran, the US, and other world powers regarding Iran's nuclear ambitions.

What was Iran's intention behind detaining the ship and its captain?

What was the broader context of the situation involving Iran and world powers?