Turkish and Armenian leaders meet at hotel after "football diplomacy"

The video tutorial introduces a concept with a simple phrase 'Boom boom' and confirms understanding with 'I understand'.

What does the speaker convey after the initial expression?

• Confusion

• Understanding

• Excitement

• Surprise

What is the initial expression used in the video to introduce the concept?

• Boom boom

• Bang bang

• Clap clap

• Snap snap