CAIRO (AP) — As a Shiite rebel offensive and Saudi-led airstrikes rage on in Yemen, thousands of Yemenis remain stuck in Egypt, unable to return home. Saudi Arabia, which launched its campaign against Houthi rebels in late March, has closed the airspace over the Arab world's poorest country, halting all commercial flights. [...] while the plight of foreigners in Yemen trying to escape has caught the attention of many, Yemenis trying to return home increasingly have fewer options as their money runs out, with some saying they even sleep on the streets of Cairo.