Complex sentence: In recent years, the COPUOS Legal Subcommittee has been unable to achieve consensus on discussion of a new comprehensive space agreement, and it is also unlikely that the Subcommittee will be able to agree to amend the Outer Space Treaty in the foreseeable future.
Split into simpler sentences: In recent years, the COPUOS Legal Subcommittee has been unable to achieve consensus on discussion of a new comprehensive space agreement. It is also unlikely that the Subcommittee will be able to agree to amend the Outer Space Treaty in the foreseeable future.