Complex sentence: Signing does not create a binding legal obligation, but does demonstrate the State's intention to examine the treaty domestically and consider ratifying it, and it obliges the State to refrain from acts that would counter or undermine the treaty's objective and purpose.
Split into simpler sentences: Signing does not create a binding legal obligation but does demonstrate the State's intention to examine the treaty domestically and consider ratifying it. It does oblige the State to refrain from acts that would counter or undermine the treaty's objective and purpose.