How to Use "resigned" with Example Sentences

1. Syria 's deputy oil minister resigned and joined the rebel opposition .
2. He resigned as president of harvard university shortly afterwards .
3. Blaming mr surkov for the attack , mr prokhorov angrily resigned a day later .
4. His friends point out that he has already resigned one plum role over the affair .
5. He resigned yesterday morning after consultations with close allies and a discussion with brown on monday afternoon and again yesterday .