Trader consensus on Polymarket favors Israel conducting military action against exactly two countries in April at 55.5%, reflecting confirmed Israeli airstrikes and ground operations in Iran—amid the ongoing war that began February 28—and intensified strikes across southern Lebanon targeting Hezbollah since April 1, including over 200 targets hit on April 4. The 39.5% probability for three countries stems from persistent Houthi missile attacks from Yemen prompting potential Israeli retaliation, as seen in prior exchanges, while Syrian targets remain a historical flashpoint but inactive this month. Recent April 13 strikes in Lebanon amid fragile ceasefire talks with Iran underscore proxy escalations without new fronts, lowering odds for ≥4 to 7.5%; remaining weeks could shift via diplomatic breakthroughs or proxy barrages.