Aufhebung der Russland-Sanktionen – Was kann ein Präsident einseitig tun?

SS:

From the link:

Under U.S. law, a president has significant ability to both lift sanctions and grant exceptions to sanctions. However, that ability is not absolute with respect to sanctions imposed pursuant to specific sanctions laws enacted by Congress. The executive branch rightfully needs flexibility with respect to economic sanctions, and Congress has respected that need in recent legislation. However, exercising the discretion Congress has provided assumes a president acts in a judicious manner consistent with U.S. law and the national interest.

The president’s delegated authority with regards to sanctions can be under a general or specific delegation from Congress. This distinction matters when it comes to lifting sanctions.

With respect to Russia sanctions, if a president terminates the national emergency related to Ukraine, subject to limited exceptions, the authority to continue IEEPA sanctions terminates as set forth above, unless the sanctions are in place under a statute other than the IEEPA.

I’m interested:

If analysis on the linked page is sound. Also I was not able to find via web search about particular sanctions:

If Trump’s administration can:
1. unfreeze Russian foreign currency reserves in US assets
2. lift oil price cap
3. remove SWIFT usage ban for all Russian banks
4. remove US sanctions on individual Russian legal entities

Related:
What is the procedure to:
5. unfreeze Russian foreign currency reserves in EU assets