Men greeting Men – A firm handshake while looking each other in the eye for formal greetings.  A light hug is acceptable for men who know each other well.

Women greeting Women – One or two kisses, one on each cheek for less formal instances.  For more formal instances and initial introductions, a handshake is common.  Traditional & some formal situations call for three kisses on alternating cheeks.  Same goes for good friends and family.

Greetings between Men & Women – Three kisses on alternating cheeks for good friends and family. For less formal situation and initial introductions, handshakes are appropriate. One or two kisses, one on each cheek for less formal instances is common as well.

Note: In Muslim areas, touching between men and women may be kept to a minimum.  When in doubt follow the local's lead.