She also welcomes the end of the Iran-backed group's "terror reign". The efforts to form a Lebanese government have stalled after a new president and prime minister were appointed in January, which ended a two-year vacuum in the presidential post.
We have set up clear red lines in the US to prevent them (Hezbollah) from terrorizing the Lebanese people, and that includes being part of the government, says Morgan Ortagus.
Ortagus is in Lebanon for her first official foreign visit after being appointed by US President Donald Trump.
The end of Hezbollah's terror reign in Lebanon and around the world has begun and it's over. Hezbollah was defeated by Israel and we are grateful to our ally Israel for defeating Hezbollah, she adds.
The US and France negotiated the ceasefire agreement in Lebanon, which put an end to the war between Hezbollah and the Israeli army.
As part of the agreement, it is up to Lebanon's regular but relatively weak army to deploy forces in the south, where they will maintain peace together with international UN forces.
In turn, Hezbollah is to withdraw northwards, north of the Litani River and further away from Israel. They will then not be allowed to have any military capabilities remaining in the south. This has been the premise even in previous agreements over the years, without it happening in practice.