National Debt
Bonds
noun
A country's debt is the national debt. It can also be bonds, like the ones you buy from your country.
こくさい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ちょうど国債を売ろうとしたところで、値が急激に下がって、売り損ねちゃったんだ。
We were on the verge of selling the government bonds, but the price rolled down too quickly and we couldn’t sell.