Why is Egypt jumping into Houthi war? First, follow the money.

Egypt's parliament has voted, after two postponements, to authorize President Abdel-Fattah el-Sisi to take “necessary measures” to help defend Saudi Arabia against the Houthis, the Iran-aligned group that controls much of Yemen and has spent weeks firing missiles and drones at the kingdom’s airports and fossil fuel infrastructure.It took weeks of debate in the halls of power for the parliament to ultimately give Sisi the greenlight. This is unusual given that the chamber is largely pro-governmen

Source: Responsible Statecraft