In light of the escalating conflict between Israel and Iran, several countries have issued urgent travel advisories urging their citizens to return home. Both Israel and Iran have closed their airspace to civilian traffic, restricting options for travelers. Here's how different countries are responding:

- **United States**: The U.S. Embassy in Israel has declared a "Do Not Travel" warning for Americans, citing extreme risk. They've provided limited assistance for those needing to leave.

- **China**: The Chinese government has activated emergency measures to evacuate nationals in both Israel and Iran, encouraging them to exit via land routes to neighboring countries.

- **South Korea**: The South Korean foreign ministry has reiterated its advice for citizens to leave Iran and avoid travel to Israel.

- **Britain**: The UK Foreign Office has advised nationals in Israel to register for safety updates and follow local guidance while recommending against travel to both Israel and Iran.

- **Russia**: The Russian ambassador advised citizens to evacuate and halted consular activities in Tehran while facilitating some evacuations from Iran.

With flight options severely limited, affected citizens may need to rely on land crossings or government-organized airlifts to leave the area safely.