Cockroaches are among the fastest insect runners and, at full speed, adopt a bipedal run to reach a high velocity in proportion to their body size. As cockroaches move very quickly, they need to be video recorded at several hundred frames per second to reveal their gait. More sedate locomotion is seen in the stick insects or walking sticks (Phasmatodea). A few insects have evolved to walk on the surface of the water, especially members of the Gerridae family, commonly known as water striders. A few species of ocean-skaters in the genus Halobates even live on the surface of open oceans, a habitat that has few insect species.
Water striders are part of what insect family?
Gerridae

Federations often have special procedures for amendment of the federal constitution. As well as reflecting the federal structure of the state this may guarantee that the self-governing status of the component states cannot be abolished without their consent. An amendment to the constitution of the United States must be ratified by three-quarters of either the state legislatures, or of constitutional conventions specially elected in each of the states, before it can come into effect. In referendums to amend the constitutions of Australia and Switzerland it is required that a proposal be endorsed not just by an overall majority of the electorate in the nation as a whole, but also by separate majorities in each of a majority of the states or cantons. In Australia, this latter requirement is known as a double majority.
What does federations have for amendments of the constitution? 
special procedures

Greece's foreign policy is conducted through the Ministry for Foreign Affairs and its head, the Minister for Foreign Affairs. The current minister is Nikos Kotzias. According to the official website, the main aims of the Ministry for Foreign Affairs are to represent Greece before other states and international organizations; safeguarding the interests of the Greek state and of its citizens abroad; the promotion of Greek culture; the fostering of closer relations with the Greek diaspora; and the promotion of international cooperation. Additionally, due to its political and geographical proximity to Europe, Asia, the Middle East and Africa, Greece is a country of significant geostrategic importance and is considered to be a middle power and has developed a regional policy to help promote peace and stability in the Balkans, the Mediterranean, and the Middle East.
Who is the present Minister of Foreign Affairs?
Nikos Kotzias