What has been Imam Khomeini’s stance on Shia-Sunni unity?

Imam Khomeini advised believers to gain true Knowledge

According to Imam Khomeini, a knowledge which would draw man closer to God, in a worldly soul brings him far distant from the place of the Almighty. Even the knowledge of divine unity (tawhid), if it is for anything other than God, it becomes a cover of darkness.

Imam Khomeini said Musa Sadr was like my son

Imam Khomeini: You have gained victory through your exceptional efforts and unity of expression.

Sahifeh-ye-Imam. V 6. P 8

Imam Khomeini warned against acquiring knowledge for the sake of personal desires.

Imam Khomeini: The Prophet of Islam wanted to create ideological unity in the world.

Sahifeh-ye-Imam, V. 2, P. 33

God Almighty, grant us the capacity to realize our responsibilities: Imam Khomeini

Imam Khomeini through his works advised the believers to do utmost so God Almighty, grant them the capacity to realize their responsibilities.

Seyyed Hassan Khomeini advises to avoid wrong and emotional behavior

Seyyed Hassan Khomeini, the grandson of the late founder of the Islamic Republic has stressed that all segment of Muslim society should avoid from displaying any wrong and emotional behavior, which could damage Islamic unity