How to get admission in Harvard or Yale University for MA in political science and international relations?

Yes, 1450 is a good SAT score nationally, but it lies below the unofficial range of admissions at Yale. Yale University do not have an official minimum requirement in terms of SAT and ACT scores for admission, but some unofficial sources confirm that, due to high selectivity the admitted students s

Yale University is highly competitive and it requires Indian students to have an absolutely impeccable application.

So, yes,  Yale's minimum requirements are just the baseline and Indian students score well above that. 

Yale has a whole person review and all the requirements are to be met.&n

Yale's Single Choice Early Action deadline in the Nov 1 each year. Indian students should use it only if Yale is the absolute choice university and you profile is highly competitive and complete. 

if any of the mentioned conditions are not met, the students should apply in the regular admissions

The University of Oxford has a larger student body than all the Ivy Leagues.

In total, Oxford is known to admit around 26K students at UG and PG levels. For Harvard University, Yale University and Princeton, the total enrollments remain around 19K to 23K. 

Only Cornell stays neck to neck to Oxfor

As such, there is no minimum GMAT / GRE score for Yale Uni MBA. But for the Class of 2027 MBA, the minimum GMAT score is 740. For GRE Quant, the average score is 166 and for GRE Verbal it is 163. The average GPA is 3.69.