Twitter has confirmed that tweets targeted to some countries are failing. They are working on fix. If you target tweets to any of the following countries, they fail.
- Albania
- Belarus
- Bosnia-Herzegovia
- Cote d'Ivoire / Ivory Coast
- Croatia
- Democratic Republic of the Congo
- Iraq
- Kosovo
- Lebanon
- Liberia
- Libya
- Montenegro
- Republic of Macedonia
- Serbia
- Somalia
- Yemen
- Zimbabwe