Crude oil futures dropped more than 4% on Friday, with the market pulled lower by a mix of profit taking and reports of a China-backed diplomatic push tied to tensions involving the United States and Iran. The move marked a sharp reversal as traders reacted to changing risk sentiment.

A wave of profit taking appeared to be one of the immediate drivers behind the decline. When oil has risen on geopolitical concerns, traders often lock in gains once the market sees signs that tensions may cool or that the worst-case scenario may not be developing as quickly as feared.

Another factor weighing on prices was a report that China had initiated an effort to restart stalled peace talks. Any indication of renewed diplomacy can reduce the geopolitical premium built into crude, because it may lower concerns about possible disruptions to supply or transport routes.

The selloff highlights how sensitive the oil market remains to political developments as well as trading position changes. For now, crude prices are responding not only to headlines about conflict risk, but also to whether investors believe diplomacy could begin to ease those pressures.