Celsius Network, a cryptocurrency lending platform, has filed a lawsuit against Tether, a stablecoin issuer, seeking over $2 billion in Bitcoin. The dispute allegedly stems from Tether's failure to deliver USDT (Tether's USD-pegged cryptocurrency) in exchange for Bitcoin, according to Celsius.

Source: https://www.cryptopolitan.com/celsius-sues-tether-for-2-billion-in-bitcoin/