politics

Q: Is indulging in politics halaal in Islam especially in a democratic country?

Q: My sister got married and after few months her husband ran away to a neighbouring country for some political reason. She was pregnant and got a baby. After two years waiting, he couldn't come back but the only way was she has to follow him. But because she is the wife of that man, the country's law doesn't allow her to leave anywhere unless she is divorced from him so they made an agreement and he sent her a divorce letter. The question is, is their marriage accepted or not?

Q: Can we enter into politics or discuss about it in public? Is there any limitations based on Shariah law?