Humanities & Social Sciences

Post completing education in Political Science, there are many opportunities that you can opt to make a career like Government jobs (IAS, IPS, IFS, etc.), joining the Nonprofit organizations or parties which deal with the social policies, Law is another good domain to pursue higher education and likewise many other options are there and you may opt for the one depending on your interest. Now like you have shown your inclination towards Business & Management, based on this I would suggest you to opt for MBA program from a well reputed institute. In MBA one can opt for International Business not because it's one of the most looked for specializations but also this would complement your previous education qualification (political Science).
There are many institutes in India which offers MBA in International Business, almost all the best known institutes offer this specialization. To know about the institutes offering this course you may refer to the following link:
http://tinyurl.com/yjaducf

As you have not mentioned your location, suggesting the best institute is not possible.
There are numerous benefits of learning Spanish in India and career opportunities are every time bright in the Spanish language. Spanish is the language of present and future, it is the language of opportunities as it is being used in most of the BPO/KPO, Moreover Spanish language is used in another industry also such as Travel, Medical, Entertainment, Market Research, Spanish Translation, Spanish interpretation, etc.
Learn Spanish and get settled in any of above-mentioned industry. Spanish is not only one the most spoken language in the world but also covers the most of the geography of the world as it is spoken in more than 20 countries in Latin America, For sure it has much influence in Europe also as it is the native language of Spain too. Moreover, it is also the 2nd highest most spoken language in the USA, and USA is the only country where BPO/KPO mostly come from in huge numbers in India.
If someone wants to learn Spanish then there are several Spanish institutes in Delhi, which provides Spanish language courses in Delhi, and you can start your Spanish classes from there. These Institutes include:
1-Delhi University
2-JNU
3-School of Spanish
4-Jamia University
All three are best option to Learn Spanish in Delhi. If someone learns this beautiful language, he/she becomes an extra ordinary personality as learning a foreign language always brings charm to you and your career. Learning Spanish also helps you reach the next level culture of another country, it can be learnt as a hobby also, when you learn Spanish, you learn a new culture, about new people, etc. Spanish culture has always been considered as one of the best cultures in the whole world as Spanish food, Spanish Music, Spanish dance like (Salsa and Flamenco), Spanish wine, Spanish people, Spanish beaches, Spanish travel destinations, etc.