I need clear simple answers for eachquestions please

Question 6 The following statement is True or False? Justify: According to VCLT, any treaty immediately enters into force if it were signed by the president of a country Use the editor to format your answer Question 7 9:20 PM Question 5 The following statement is True or False? Justify: UN Security Council resolutions are the most important source of international law Text style . T . A . " . B I V A B. =. q. 5 Use the editor to format your answer Word count: 0 9:20 PM Question 7 2 Points C State A and State B signed a treaty for trade between both nations. The treaty has come into force. But after 2 years, State B said that it is no longer bound by the treaty citing the opinion of a famous international law ?scholar Ahmadovic who said that such treaty would be invalid. Do you think State B's excuse is valid? Why 9:20 PM