Nikah

Assalamoalaikum....... i want to know that is Nikah valid if the bride is having her menses when the nikah is held?? thankyou please do not mention my name if you want to display the question for others to view...

can a sunni girl marry a shia guy?The girl and the guy are seriously interested but the parents of girl are of view that shias are non muslims.Plz tell if shias are non muslims then y  are they allowed to perform Hajj in Mecca.And y they are allowed to rotate around the same house (Kaaba).Plz give me a clear answer whether the nikah of a sunni girl with a shia guy would be unlawful?

What does the Islam teach about the permanence of marriage and divorce?