Realpolitik (see also Political realism; from German: real "realistic", "practical" or "actual"; and Politik "politics", German pronunciation: [ʁeˈaːlpoliˌtiːk]) refers to politics or diplomacy based primarily on power and on practical and material factors and considerations, rather than ideological notions or moralistic or ethical premises. In this respect, it shares aspects of its philosophical approach with those of realism and pragmatism. The term realpolitik is sometimes used pejoratively to imply politics that are coercive, amoral, or Machiavellian. Balancing power to keep the European pentarchy was the means for keeping the peace, and careful Realpolitikers tried to avoid arms races.

'Realpolitik' was coined by Ludwig von Rochau, a German writer and politician in the 19th century. His 1853 book Grundsätze der Realpolitik angewendet auf die staatlichen Zustände Deutschlands describes the meaning of the term:

Paulino Iglesias Posse (October 18, 1850 – December 9, 1925), better known as Pablo Iglesias, was a Spanish socialist and labour leader. He is regarded as the father of Spanish socialism; having founded the Spanish Socialist Workers' Party (PSOE) in 1879 and the Spanish General Workers' Union (UGT) in 1888.

Iglesias was born to humble parents who called him Paulino. He attended school between the ages of six and nine, when his father, a municipal laborer, died. Pablo, his younger brother, and their mother put their possessions in a small covered cart and walked with it to live in Madrid. Pablo's mother survived there by begging, and both boys entered the Hospicio of San Fernando. They completed primary schooling there, and Pablo learned printing. Aged twelve he left the Hospicio to work and to help support his mother. He worked as a printer, gradually improving his wages. While he was rendered unemployed by a strike, his brother died of tuberculosis.

He attended evening classes and learned French. This let him read classic works of French political science, translate the works of French socialists and participate successfully in international congresses. Protected by the 1869 Constitution, the Spanish section of the International Workers Association (AIT) organized a series of conferences in Madrid. Iglesias attended, and in 1870, was invited to enter the printers section. The appearance of Solidarity, newspaper of the International, started him on the intense journalistic career that occupied the rest of his life.

Amit Shah (born 1964) is a Indian politician and former Home minister from Gujarat, member of the Bharatiya Janata Party. He is currently under judicial bail as one of the accused for kidnapping and encounter killing by the State Police of Sohrabuddin Shaikh, an alleged terrorist with more than 60 criminal cases against him, his wife Kauserbi and their friend Tulsiram Prajapati. The Supreme Court has directed that while his bail is under challenge, he is not permitted to enter his home state of Gujarat where he may influence the investigations as he was the Home Minister during the encounter killing. There has been questions raised about this Supreme Court ruling and if it was part of a Political witch hunt

Shah's father, Anilchandra Shah was a wealthy businessman. Shah worked as a stockbroker for some time. During this period he joined the BJP and came close to L K Advani. He managed several of Advani's election campaigns from the Gandhinagar (Lok Sabha constituency). He was then appointed Chairman of The Gujarat State Finance Corporation Limited, the youngest person in this post. He was later appointed chairman of the Ahmedabad District Cooperative Bank.

Arun Jaitley (Hindi:अरुण जेटली ) (born 28 December 1952) is a prominent Indian politician and a member of the Bharatiya Janata Party (BJP), which is currently the largest Opposition party in India. He is the leader of opposition in the Rajya Sabha and has previously served as the Union Minister for commerce, industry, law and justice of the Government of India.

He was born to Kishen and Ratan Prabha Jaitley. Born to a lawyer father, he did his schooling at St. Xavier's School, New Delhi from 1969-70.^{[citation needed]} He graduated in Commerce from Shri Ram College of Commerce, New Delhi in 1973. He passed his Law degree from the Faculty of Law, University of Delhi, in 1977. During his career as a student, he was the recipient of several distinctions for his outstanding performances both in academics and extra curricular activities. He was President of the Students Union of Delhi University in 1974.

Jaitley was an Akhil Bharatiya Vidyarthi Parishad (ABVP) student leader in the Delhi University Campus in the seventies and rose to be President of the University Students' Union in 1974. During the period of proclamation of Internal Emergency (1975–77) when civil liberties were suspended, he was under preventive detention for a period of 19 months. He was a prominent leader of a movement against corruption launched in the year 1973 by Raj Narain and Jai Prakash Narayan. He was the Convenor of the National Committee for Students and Youth organisation appointed by Jai Prakash Narayan. He was also active in civil rights movement and helped found PUCL Bulletin along with Satish Jha and Smitu Kothari. After being released from jail he joined Jan Sangh.

Rajnath Singh (born July 10, 1951) is a prominent Indian politician who has served the country in many capacities. Beginning his career as a physics lecturer, Singh used his long-term connections with the Rashtriya Swayamsevak Sangh in order to become involved with the Janata Party. That involvement led him to numerous official positions within his home state of Uttar Pradesh. Among his roles have been a period as Chief Minister of Uttar Pradesh, as a Cabinet Minister in the National Democratic Alliance regime and as National President of one the country's major political organisations, the Bharatiya Janata Party (BJP). He was previously president of the BJP youth wing and the BJP's unit in his home state.

Rajnath Singh was born in the small village of Bhabhaura in the Chandauli district of the Indian state of Uttar Pradesh in a Rajput family . His father was Ram Badan Singh and his mother was Gujarati Devi. He was born into a simple farmer's family in the region and went on to secure a masters degree in physics, acquiring first division results from the Gorakhpur University. Rajnath Singh had been associated with the Rashtriya Swayamsevak Sangh since 1964, at the age of 13 and remained connected with the organization even when he took up his job of a physics lecturer in Mirzapur. In 1974, he was appointed secretary for the Mirzapur unit of the Bharatiya Jan Sangh, a Hindutva based political party.