Volatility is one of the most characteristic features of contemporary security.

The level of threats increases or decreases, completely new phenomena appear

and quickly disturb the global balance and threaten the durability of security

systems. This dynamic nature of security verifies both the state and process, as

well as their understanding by researchers.

The monograph refers to key aspects of the contemporary understanding of

security, in its military, political, social, and informational context, as well

as other dimensions. It presents and analyzes the identification criteria and

determinants of security and characterizes the nature of contemporary threats

and the dynamics of their changes. Armed conflicts, terrorism, migration,

digital threats, loss of national identity, and populist use of security categories

to justify the use of extraordinary measures to combat threats are among the

selected areas discussed by the authors. The monograph also raises the issues

of cooperation for security, its management and education for security as a key

activity to ensure it.