[On-point] Trump threatens extra tariffs, more defense costs on S. Korea. What are the Lee administration's next steps?

As we just heard, U.S. President Donald Trump continues to threaten South Korea, by calling on Seoul to pay for its own defense and vowing to impose extra tariffs.

For more on this, we're joined by Professor Robert Kelly, Professor of International Relations at Pusan National University.

Professor Kelly, thanks for joining us this morning.

1. How do you think the Korean government should handle the issue of sharing the cost of keeping American troops in South Korea?

2. Trump's comments come as South Korea's top security adviser is in Washington for talks on tariffs and a potential summit between the two countries. Could we expect to see President Lee Jae Myung and Trump meet in the near future?

3. Trump has extended the tariff deadline, allowing trade talks to continue for around three more weeks. How do you think the negotiations with South Korea will unfold?

4. What's on the table for trade talks between South Korea and the United States? What leverage does Seoul have?

5. Trump unveiled tariff letters sent to countries on his social media yesterday, and he posted those sent to South Korea and Japan first --before disclosing those sent to other trading partners. What might this suggest?

Alright Professor Kelly. Thank you so much for your insight. We appreciate it.