Iran has prepared a harsh retaliation plan in case peace negotiations collapse, according to a warning reportedly delivered to Washington. The country is said to be ready to strike undersea cables, the infrastructure that carries most of the world's internet and communications traffic. Iranian sources told the United States 'not to play with fire,' claiming Tehran has full access to the submarine cables and could easily destroy them. Cutting such lines would disrupt connections between continents and could wreak havoc on global finance and daily communication. The threat surfaced as diplomatic efforts over Iran's nuclear program and regional tensions appear to be stalling. Analysts note that damaging the cables would also carry severe consequences for Iran itself. Military planners in the region treat the possibility as a serious escalation scenario. Talks between the parties have continued despite the heated rhetoric.