Tin is a highly malleable metal, meaning it can be easily shaped and formed without breaking. It has a low melting point, which allows it to be easily manipulated into various shapes and forms. This malleability makes tin a popular choice for use in soldering, as well as in the production of various metal alloys. Overall, tin's malleability makes it a versatile and valuable material for a wide range of applications. **

Cobalt is a relatively malleable metal, meaning it can be easily shaped or formed into different shapes without breaking. However, cobalt is not highly flammable and does not catch fire easily. It has a high melting point and is considered to be a stable metal in terms of its flammability. **

In the context of copper, plasticity refers to its ability to be easily molded or shaped without breaking. Malleability means that copper can be hammered or rolled into thin sheets without breaking. Elasticity refers to copper's ability to return to its original shape after being stretched or deformed. Ductility indicates that copper can be drawn into thin wires. Oxidation resistance means that copper is less likely to corrode or rust when exposed to oxygen in the air. **

The caricature of the summit conference in Helsinki shows the leaders of the United States and Russia, Donald Trump and Vladimir Putin, sitting at a table with Trump holding a puppet string attached to Putin. This caricature is a satirical representation of the perception that Trump is under the control or influence of Putin, suggesting that Putin is pulling the strings and manipulating Trump. The image reflects the controversy and speculation surrounding the relationship between the two leaders and the potential influence of Russia on the United States. **

A symposium is a formal gathering or meeting where experts in a particular field come together to discuss and exchange ideas on a specific topic. It is often organized as a series of presentations, panel discussions, and Q&A sessions, allowing participants to share their knowledge and insights with each other. Symposia are commonly held in academic and professional settings, providing a platform for networking, collaboration, and learning within a specific discipline or industry. **

"Der Kongress tanzt" is a German phrase that translates to "The Congress Dances" in English. The phrase originated from the Congress of Vienna in 1814-1815, where European diplomats and leaders gathered to reorganize Europe after the Napoleonic Wars. The phrase is a metaphor for the diplomatic and political maneuvering that took place during the Congress, likening it to a dance where participants carefully navigated their relationships and alliances. It reflects the complex and intricate nature of international diplomacy and negotiations during this historic event. **

A convention is a formal agreement or a set of accepted norms and practices that govern behavior in a particular context or industry. It is a customary way of doing things that is widely recognized and followed by a group of people. Conventions help to establish consistency, order, and predictability in social interactions or professional settings. They can vary across different cultures, societies, or fields of study. **

The G20 summit is a meeting of the leaders of the world's 20 largest economies, representing both developed and developing countries. The summit provides a platform for these leaders to discuss and coordinate on global economic issues, such as trade, finance, and development. It is an opportunity for countries to work together to address common challenges and promote global economic stability and growth. The G20 summit also serves as a forum for leaders to address pressing international issues, such as climate change, terrorism, and global health crises. **